001 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) link:presentationLink link:definitionLink link:calculationLink 002 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) (Parentheticals) link:presentationLink link:definitionLink link:calculationLink 003 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF INCOME (unaudited) link:presentationLink link:definitionLink link:calculationLink 004 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (unaudited) link:presentationLink link:definitionLink link:calculationLink 005 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) link:presentationLink link:definitionLink link:calculationLink 006 - Disclosure - 1. Basis of presentation link:presentationLink link:definitionLink link:calculationLink 007 - Disclosure - 2. Inventories link:presentationLink link:definitionLink link:calculationLink 008 - Disclosure - 3. Accrued product warranty liability link:presentationLink link:definitionLink link:calculationLink 009 - Disclosure - 4. Earnings per share link:presentationLink link:definitionLink link:calculationLink 010 - Disclosure - 5. Shareholders' equity link:presentationLink link:definitionLink link:calculationLink 011 - Disclosure - 6. Income taxes link:presentationLink link:definitionLink link:calculationLink 012 - Disclosure - 7. Commitments and contingencies link:presentationLink link:definitionLink link:calculationLink 013 - Disclosure - 2. Inventories (Tables) link:presentationLink link:definitionLink link:calculationLink 014 - Disclosure - 3. Accrued product warranty liability (Tables) link:presentationLink link:definitionLink link:calculationLink 015 - Disclosure - 4. Earnings per share (Tables) link:presentationLink link:definitionLink link:calculationLink 016 - Disclosure - 5. Shareholders' equity (Tables) link:presentationLink link:definitionLink link:calculationLink 017 - Disclosure - 2. Inventories (Details) - Inventory components link:presentationLink link:definitionLink link:calculationLink 018 - Disclosure - 3. Accrued product warranty liability (Details) link:presentationLink link:definitionLink link:calculationLink 019 - Disclosure - 3. Accrued product warranty liability (Details) - Warranty Activity link:presentationLink link:definitionLink link:calculationLink 020 - Disclosure - 4. Earnings per share (Details) link:presentationLink link:definitionLink link:calculationLink 021 - Disclosure - 4. Earnings per share (Details) - Earnings per share reconciliation link:presentationLink link:definitionLink link:calculationLink 022 - Disclosure - 5. Shareholders' equity (Details) - Changes in Shareholders' Equity link:presentationLink link:definitionLink link:calculationLink 023 - Disclosure - 6. Income taxes (Details) link:presentationLink link:definitionLink link:calculationLink 024 - Disclosure - 7. Commitments and contingencies (Details) link:presentationLink link:definitionLink link:calculationLink 000 - Disclosure - Document And Entity Information link:presentationLink link:definitionLink link:calculationLink