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Document And Entity Information - USD ($)	6 Months Ended
Document And Entity Information - USD ($)	Jun. 30, 2016	Jul. 29, 2016
Document and Entity Information [Abstract]
Entity Registrant Name	Transact Technologies Incorporated
Document Type	10-Q
Current Fiscal Year End Date	--12-31
Entity Common Stock, Shares Outstanding		7,459,009
Entity Public Float	$ 57,100,000
Amendment Flag	false
Entity Central Index Key	0001017303
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Smaller Reporting Company
Entity Well-known Seasoned Issuer	No
Document Period End Date	Jun. 30, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q2

CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 2,555	$ 4,473
Accounts receivable, net	10,369	7,174
Inventories	9,019	11,296
Prepaid income taxes	200
Deferred tax assets	1,762	1,932
Other current assets	480	437
Total current assets	24,385	25,312
Fixed assets, net of accumulated depreciation of $18,771 and 18,336, respectively	2,441	2,507
Goodwill	2,621	2,621
Deferred tax assets	1,223	1,213
Intangible assets, net of accumulated amortization of $2,943, and $2,779, respectively	724	888
Other assets	28	28
	7,037	7,257
Total assets	31,422	32,569
Current liabilities:
Accounts payable	4,512	2,642
Accrued liabilities	2,183	2,838
Income taxes payable	4	245
Deferred revenue	152	604
Total current liabilities	6,851	6,329
Deferred revenue, net of current portion	78	77
Deferred rent, net of current portion	199	189
Other liabilities	284	246
	561	512
Total liabilities	7,412	6,841
Shareholders’ equity:
Common stock, $0.01 par value, 20,000,000 shares authorized; 11,185,331 and 11,170,881 shares issued, respectively; 7,508,951 and 7,782,292 shares outstanding, respectively	112	112
Additional paid-in capital	29,348	28,921
Retained earnings	23,102	22,956
Accumulated other comprehensive loss, net of tax	(98)	(80)
Treasury stock, at cost, 3,676,380 and 3,388,589 shares, respectively	(28,454)	(26,181)
Total shareholders’ equity	24,010	25,728
Total liabilities and shareholders’ equity	$ 31,422	$ 32,569

CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) (Parentheticals) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Fixed assets, net of accumulated depreciation of $18,771 and 18,336, respectively (in Dollars)	$ 18,771	$ 18,336
Intangible assets, net of accumulated amortization of $2,943, and $2,779, respectively (in Dollars)	$ 2,943	$ 2,779
Common stock par value (in Dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares issued	11,185,331	11,170,881
Common stock, shares outstanding	7,508,951	7,782,292
Treasury stock shares	3,676,380	3,388,589

CONDENSED CONSOLIDATED STATEMENTS OF INCOME (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Net sales	$ 14,801	$ 17,224	$ 29,158	$ 33,388
Cost of sales	8,818	10,063	17,290	19,735
Gross profit	5,983	7,161	11,868	13,653
Operating expenses:
Engineering, design and product development	1,089	860	2,325	1,728
Selling and marketing	1,859	2,100	3,652	3,923
General and administrative	1,935	2,002	3,852	3,842
Legal fees associated with lawsuit (Note 7)		(6)		1,738
	4,883	4,956	9,829	11,231
Operating income	1,100	2,205	2,039	2,422
Interest and other income (expense):
Interest, net	(7)	(10)	(11)	(16)
Other, net	15	(26)	16	(12)
	8	(36)	5	(28)
Income before income taxes	1,108	2,169	2,044	2,394
Income tax provision	355	781	666	862
Net income	$ 753	$ 1,388	$ 1,378	$ 1,532
Net income per common share:
Basic (in Dollars per share)	$ 0.10	$ 0.18	$ 0.18	$ 0.20
Diluted (in Dollars per share)	$ 0.10	$ 0.18	$ 0.18	$ 0.20
Shares used in per-share calculation:
Basic (in Shares)	7,689	7,798	7,761	7,827
Diluted (in Shares)	7,743	7,819	7,813	7,847
Dividends declared and paid per common share: (in Dollars per share)	$ 0.08	$ 0.08	$ 0.16	$ 0.16

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Net income	$ 753	$ 1,388	$ 1,378	$ 1,532
Foreign currency translation adjustment, net of tax	(14)	13	(18)	4
Comprehensive income	$ 739	$ 1,401	$ 1,360	$ 1,536

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash flows from operating activities:
Net income	$ 1,378	$ 1,532
Adjustments to reconcile net income to net cash provided by operating activities:
Share-based compensation expense	305	269
Incremental tax benefits from stock options exercised	(1)
Depreciation and amortization	643	734
Deferred income tax provision	170	1,261
Gain on the sale of fixed assets	(5)
Foreign currency transaction (gains) losses	(12)	11
Changes in operating assets and liabilities:
Accounts receivable	(3,203)	(1,982)
Inventories	2,273	840
Prepaid income taxes	(205)	(228)
Other current and long term assets	(45)	(21)
Accounts payable	1,871	3,869
Accrued liabilities and other liabilities	(1,272)	(4,448)
Net cash provided by operating activities	1,897	1,837
Cash flows from investing activities:
Capital expenditures	(330)	(407)
Proceeds from sale of fixed assets	8
Net cash used in investing activities	(322)	(407)
Cash flows from financing activities:
Revolving credit line borrowings		2,500
Revolving credit line payments		(2,500)
Payment of dividends on common stock	(1,232)	(1,243)
Purchases of common stock for treasury	(2,273)	(1,020)
Proceeds from stock option exercises	23
Incremental tax benefits on stock options exercised	1
Net cash used in financing activities	(3,481)	(2,263)
Effect of exchange rate changes on cash and cash equivalents	(12)	(5)
Decrease in cash and cash equivalents	(1,918)	(838)
Cash and cash equivalents, beginning of period	4,473	3,131
Cash and cash equivalents, end of period	2,555	$ 2,293
Supplemental schedule of non-cash investing activities:
Capital expenditures funded by accounts payable	$ 86

1. Basis of presentation	6 Months Ended
1. Basis of presentation	Jun. 30, 2016
Disclosure Text Block [Abstract]
Business Description and Basis of Presentation [Text Block]	1. Basis of presentation The accompanying unaudited financial statements of TransAct Technologies Incorporated have been prepared in accordance with accounting principles generally accepted in the United States of America for interim financial information. Accordingly, they do not include all of the information and footnotes required by accounting principles generally accepted in the United States of America to be included in full year financial statements. In the opinion of management, all adjustments considered necessary for a fair statement of the results for the periods presented have been included and are of a normal recurring nature. The December 31, 2015 Condensed Consolidated Balance Sheet data was derived from audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States of America. These interim financial statements should be read in conjunction with the audited financial statements for the year ended December 31, 2015 included in our Annual Report on Form 10-K. The financial position and results of operations of our U.K. subsidiary are measured using local currency as the functional currency. Assets and liabilities of such subsidiary have been translated at the end of period exchange rates, and related revenues and expenses have been translated at the weighted average exchange rates with the resulting translation gain or loss recorded in accumulated other comprehensive income (loss) in the Condensed Consolidated Balance Sheets. Transaction gains and losses are included in other income (expenses) in the Condensed Consolidated Statements of Income. The results of operations for the three and six months ended June 30, 2016 are not necessarily indicative of the results to be expected for the full year.

2. Inventories

3 Months Ended

Jun. 30, 2016

Inventory Disclosure [Abstract]

Inventory Disclosure [Text Block]

2. Inventories

The components of inventories are:

	June 30,		December 31,
	2016		2015
	(In thousands)

Raw materials and purchased component parts	$	5,285	$	6,627
Work-in-process		56		1
Finished goods		3,678		4,668
	$	9,019	$	11,296

3. Accrued product warranty liability

6 Months Ended

Jun. 30, 2016

Product Warranties Disclosures [Abstract]

Product Warranty Disclosure [Text Block]

3. Accrued product warranty liability

We generally warrant our products for up to 36 months and record the estimated cost of such product warranties at the time the sale is recorded. Estimated warranty costs are based upon actual past experience of product repairs and the related estimated cost of labor and material to make the necessary repairs.

The following table summarizes the activity recorded in the accrued product warranty liability during the six months ended June 30, 2016 and 2015:

	Six months ended
	June 30,
	2016		2015
	(In thousands)


Balance, beginning of period	$	277	$	287
Warranties issued		131		125
Warranty settlements		(136)		(149)
Balance, end of period	$	272		263

$164,000 of the accrued product warranty liability is classified as current in Accrued liabilities at June 30, 2016 in the Condensed Consolidated Balance Sheets. The remaining $108,000 of the accrued product warranty liability is classified as long-term in Other liabilities.

4. Earnings per share

6 Months Ended

Jun. 30, 2016

Earnings Per Share [Abstract]

Earnings Per Share [Text Block]

4. Earnings per share

The following table sets forth the reconciliation of basic weighted average shares outstanding and diluted weighted average shares outstanding:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2016		2015		2016		2015
	(In thousands, except per share data)

Net income	$	753	$	1,388	$	1,378	$	1,532

Shares:
Basic: Weighted average common shares outstanding		7,689		7,798		7,761		7,827
Add: Dilutive effect of outstanding options as determined by the treasury stock method		54		21		52		20
Diluted: Weighted average common and common equivalent shares outstanding		7,743		7,819		7,813		7,847

Net income per common share:
Basic	$	0.10	$	0.18	$	0.18	$	0.20
Diluted	$	0.10	$	0.18	$	0.18	$	0.20

The computation of diluted earnings per share excludes the effect of the potential exercise of stock awards, including stock options, restricted stock units and performance stock awards, when the average market price of the common stock is lower than the exercise price of the related stock award during the period. These outstanding stock awards are not included in the computation of diluted earnings per share because the effect would be anti-dilutive. For the three months ended June 30, 2016 and 2015, there were 827,000 and 877,000, respectively, potentially dilutive shares consisting of stock awards that were excluded from the calculation of earnings per diluted share. For the six months ended June 30, 2016 and 2015, there were 827,000 and 877,000, respectively, potentially dilutive shares consisting of stock awards that were excluded from the calculation of earnings per diluted share.

5. Shareholders' equity	6 Months Ended
5. Shareholders' equity	Jun. 30, 2016
Stockholders' Equity Note [Abstract]
Stockholders' Equity Note Disclosure [Text Block]	5. Shareholders’ equity Changes in shareholders’ equity for the six months ended June 30, 2016 were as follows (in thousands): We paid a portion of the 2015 incentive bonus for the chief executive officer and chief financial officer in the form of 28,231 deferred stock units. Such deferred stock units were granted in February 2016 and were fully vested at the time of grant.

- Definition

The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.

+ References

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+ Details

6. Income taxes	6 Months Ended
6. Income taxes	Jun. 30, 2016
Income Tax Disclosure [Abstract]
Income Tax Disclosure [Text Block]	6. Income taxes We are subject to U.S. federal income tax as well as income tax in certain state and foreign jurisdictions. We have substantially concluded all U.S. federal income tax, state and local, and foreign tax regulatory examination matters through 2011. During 2013, an examination of our 2010 federal tax return was completed. However, our federal tax returns for the years 2012 through 2014 remain open to examination. Various state and foreign tax jurisdiction tax years remain open to examination as well, though we believe that any additional assessment would be immaterial to the Condensed Consolidated Financial Statements. No state or foreign tax jurisdiction income tax returns are currently under examination. As of June 30, 2016, we had $114,000 of total gross unrecognized tax benefits that, if recognized, would favorably affect the effective income tax rate in any future periods.

7. Commitments and contingencies	6 Months Ended
7. Commitments and contingencies	Jun. 30, 2016
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies Disclosure [Text Block]	7. Commitments and contingencies On June 8, 2012, Avery Dennison Corporation (“AD”) filed a civil complaint against us and a former employee of ours and of AD, in the Court of Common Pleas (the “Court”) in Lake County, Ohio. The complaint alleged that we and this former employee misappropriated unspecified trade secrets and confidential information from AD related to the design of our food safety terminals. The complaint requested a preliminary and permanent injunction against us from manufacturing and selling our Ithaca® 9700 and 9800 food safety terminals. On July 16, 2012, we filed our answer, affirmative defenses and counterclaims, seeking all available damages including legal fees. A hearing on the plaintiff's motion for preliminary injunction took place in August 2012, and in November 2012, the Court denied this request. AD filed an appeal of the Court’s ruling to the Eleventh Appellate District, which heard oral arguments on the appeal on July 16, 2013. On July 23, 2013, AD requested that the Eleventh Appellate District enjoin our further sale and marketing of the food safety terminals, pending the Court of Appeals’ decision. On July 29, 2013, we opposed this request. On October 15, 2013, the Eleventh District Court of Appeals affirmed the lower court’s decision in our favor and denied AD’s further request of an injunction pending the Court of Appeals’ decision. On October 24, 2013, AD filed a motion seeking that the Court of Appeals reconsider its decision. On April 16, 2014, the Court of Appeals denied AD’s motion to reconsider its decision. On July 28, 2014, AD filed a motion requesting leave from the Court to file an amended complaint and indicating that it has elected to pursue only its claim for damages, dropping its claim for injunctive relief. On September 4, 2014, the Court granted AD’s motion to file an amended complaint. On September 25, 2014, we filed our answer, affirmative defenses and counterclaims with respect to the amended complaint, seeking all available damages including legal fees. On January 30, 2015, we filed a motion for summary judgment seeking judgment in our favor on all counts as to the Company. On the same day, AD filed two motions for partial summary judgment. On February 17, 2015, we opposed both of AD’s motions, and AD opposed our motion. On February 23, 2015, the Company filed a reply brief in support of its motion for summary judgment. A trial was scheduled to begin on April 21, 2015 however, on March 25, 2015 the parties executed a confidential settlement agreement and release (the “Settlement Agreement”) in which the parties mutually agreed to resolve the dispute that was the subject of the lawsuit filed by AD against the Company to the parties’ mutual satisfaction. Under the terms of the Settlement Agreement, we agreed to pay AD $3,600,000 payable on or before April 8, 2015 and also to qualify certain AD labels for use on our food safety terminals at an estimated cost of $25,000. We made the $3,600,000 payment to AD on April 8, 2015 and borrowed $2,500,000 under our revolving credit facility with TD Bank to fund the payment. We recorded the total expense of $3,625,000 in the fourth quarter 2014 as an operating expense included in the line item “Legal fees and settlement expense associated with lawsuit” on the Consolidated Statement of Operations and as a current liability included in the line item “Accrued lawsuit settlement expenses” on the Consolidated Balance Sheet. In the second quarter of 2015, we reversed $25,000 of this expense because AD did not provide the label testing information by the due date required per the settlement agreement.

8. Accounting pronouncements	6 Months Ended
8. Accounting pronouncements	Jun. 30, 2016
Accounting Policies [Abstract]
Significant Accounting Policies [Text Block]	8. Accounting pronouncements In May 2014, the FASB issued Accounting Standards Update (ASU) 2014-09, "Revenue from Contracts with Customers." This ASU is intended to clarify the principles for recognizing revenue by removing inconsistencies in revenue requirements; providing a more robust framework for addressing revenue issues; improving comparability of revenue recognition practices across entities, industries, jurisdictions and capital markets; and providing more useful information to users of financial statements through improved revenue disclosure requirements. In April 2015, the FASB voted to defer the effective date of the new revenue recognition standard by one year. As a result, the provisions of this ASU are now effective for interim and annual periods beginning after December 15, 2017. We are currently evaluating the impact this ASU may have on our consolidated financial position, results of operations or cash flows.

2. Inventories (Tables)

6 Months Ended

Jun. 30, 2016

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

The components of inventories are:

	June 30,		December 31,
	2016		2015
	(In thousands)

Raw materials and purchased component parts	$	5,285	$	6,627
Work-in-process		56		1
Finished goods		3,678		4,668
	$	9,019	$	11,296

3. Accrued product warranty liability (Tables)

6 Months Ended

Jun. 30, 2016

Product Warranties Disclosures [Abstract]

Schedule of Product Warranty Liability [Table Text Block]

We generally warrant our products for up to 36 months

	Six months ended
	June 30,
	2016		2015
	(In thousands)


Balance, beginning of period	$	277	$	287
Warranties issued		131		125
Warranty settlements		(136)		(149)
Balance, end of period	$	272		263

4. Earnings per share (Tables)

6 Months Ended

Jun. 30, 2016

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2016		2015		2016		2015
	(In thousands, except per share data)

Net income	$	753	$	1,388	$	1,378	$	1,532

Shares:
Basic: Weighted average common shares outstanding		7,689		7,798		7,761		7,827
Add: Dilutive effect of outstanding options as determined by the treasury stock method		54		21		52		20
Diluted: Weighted average common and common equivalent shares outstanding		7,743		7,819		7,813		7,847

Net income per common share:
Basic	$	0.10	$	0.18	$	0.18	$	0.20
Diluted	$	0.10	$	0.18	$	0.18	$	0.20

2. Inventories (Details) - Inventory components - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Inventory components [Abstract]
Raw materials and purchased component parts	$ 5,285	$ 6,627
Work-in-process	56	1
Finished goods	3,678	4,668
	$ 9,019	$ 11,296

3. Accrued product warranty liability (Details)	Jun. 30, 2016 USD ($)
Product Warranties Disclosures [Abstract]
Product Warranty Accrual, Current	$ 164,000
Product Warranty Accrual, Noncurrent	$ 108,000

3. Accrued product warranty liability (Details) - Warranty Activity - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Warranty Activity [Abstract]
Balance, beginning of period	$ 277	$ 287
Warranties issued	131	125
Warranty settlements	(136)	(149)
Balance, end of period	$ 272	$ 263

4. Earnings per share (Details) - USD ($)	3 Months Ended		6 Months Ended
4. Earnings per share (Details) - USD ($)	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Earnings Per Share [Abstract]
Dilutive Securities, Effect on Basic Earnings Per Share, Options and Restrictive Stock Units	$ 827,000	$ 877,000	$ 827,000	$ 877,000

4. Earnings per share (Details) - Earnings per share reconciliation - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Earnings Per Share Reconciliation [Abstract]
Net income (in Dollars)	$ 753	$ 1,388	$ 1,378	$ 1,532
Shares:
Basic: Weighted average common shares outstanding	7,689	7,798	7,761	7,827
Add: Dilutive effect of outstanding options as determined by the treasury stock method	54	21	52	20
Diluted: Weighted average common and common equivalent shares outstanding	7,743	7,819	7,813	7,847
Net income per common share:
Basic (in Dollars per share)	$ 0.10	$ 0.18	$ 0.18	$ 0.20
Diluted (in Dollars per share)	$ 0.10	$ 0.18	$ 0.18	$ 0.20

5. Shareholders' equity (Details)	6 Months Ended
5. Shareholders' equity (Details)	Jun. 30, 2016 shares
Stockholders' Equity Note [Abstract]
Stock Issued During Period, Shares, Restricted Stock Award, Gross	28,231

6. Income taxes (Details)	Jun. 30, 2016 USD ($)
Income Tax Disclosure [Abstract]
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 114,000

7. Commitments and contingencies (Details) - USD ($)	3 Months Ended
7. Commitments and contingencies (Details) - USD ($)	Jun. 30, 2015	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Litigation Settlement, Amount		$ 3,600,000
Loss Contingency, Settlement Agreement, Terms		$25,000
Estimated Litigation Liability, Current		$ 3,625,000
Loss Contingency Accrual, Provision	$ 25,000