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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2016
Income Tax Disclosure [Abstract] |
Schedule of Income before Income Tax, Domestic and Foreign | The jurisdictional components of income before taxes consist of the following:
|  | December 31,
(in thousands) |  | 2016 |  | 2015 |  | 2014
Income before income taxes: |  |  |  |  |  |
Domestic |  | $ | 44,446 |  |  | $ | 52,313 |  |  | $ | 43,345 |
Foreign |  | 17,743 |  |  | 14,554 |  |  | 17,260 |
|  | $ | 62,189 |  |  | $ | 66,867 |  |  | $ | 60,605 |
Schedule of Components of Income Tax Expense (Benefit) | The components of income tax expense (benefit) consist of the following:
|  | December 31,
(in thousands) |  | 2016 |  | 2015 |  | 2014
Current: |  |  |  |  |  |
Domestic |  | $ | 11,958 |  |  | $ | 13,293 |  |  | $ | 13,495 |
Foreign |  | 5,491 |  |  | 4,614 |  |  | 3,382 |
State |  | 2,075 |  |  | 2,947 |  |  | 2,685 |
|  | 19,524 |  |  | 20,854 |  |  | 19,562 |
Deferred: |  |  |  |  |  |  |  |  |
Domestic |  | 1,580 |  |  | 3,481 |  |  | (600 | )
Foreign |  | 934 |  |  | (718 | ) |  | 540 |
State |  | 106 |  |  | 41 |  |  | (48 | )
|  | 2,620 |  |  | 2,804 |  |  | (108 | )
Total income taxes |  | $ | 22,144 |  |  | $ | 23,658 |  |  | $ | 19,454 |
Schedule of Effective Income Tax Rate Reconciliation | The difference between income tax expense (benefit) for financial statement purposes and the amount of income tax expense computed by applying the domestic statutory income tax rate of 35% to income before income taxes consists of the following:
|  | December 31,
(in thousands) |  | 2016 |  | 2015 |  | 2014
Domestic statutory rate at 35% |  | $ | 21,766 |  |  | $ | 23,403 |  |  | $ | 21,212 |
Increase (reduction) from: |  |  |  |  |  |  |  |  |
Jurisdictional rate differences |  | (1,936 | ) |  | (2,192 | ) |  | (2,119 | )
Valuation allowance |  | 1,731 |  |  | 797 |  |  | 353 |
Stock based compensation |  | 275 |  |  | 257 |  |  | 199 |
U.S. state taxes |  | 1,295 |  |  | 1,942 |  |  | 1,649 |
Domestic production deduction |  | (618 | ) |  | (518 | ) |  | (1,321 | )
R&D credit |  | (329 | ) |  | (475 | ) |  | (614 | )
Other, net |  | (40 | ) |  | 444 |  |  | 95 |
Provision for income taxes |  | $ | 22,144 |  |  | $ | 23,658 |  |  | $ | 19,454 |
Effective tax rate |  | 36 | % |  | 35 | % |  | 32 | %
Schedule of Deferred Tax Assets and Liabilities | The components of the Company’s deferred income tax assets and liabilities consist of the following:
|  | December 31,
(in thousands) |  | 2016 |  | 2015
Deferred income tax assets: |  |  |  |
Inventory basis difference |  | $ | 1,568 |  |  | $ | 2,241 |
Accounts receivable reserve |  | 231 |  |  | 529 |
Depreciation |  | — |  |  | 110 |
Stock based compensation |  | 937 |  |  | 968 |
Pension liability |  | 3,947 |  |  | 2,481 |
Employee benefit accrual |  | 1,481 |  |  | 2,038 |
Product liability and warranty reserves |  | 1,600 |  |  | 1,517 |
Expenses not currently deductible for tax purposes |  | 28 |  |  | 60 |
Foreign net operating loss |  | 3,513 |  |  | 2,726 |
State net operating loss |  | 102 |  |  | 49 |
Other |  | 94 |  |  | 194 |
Total deferred income tax assets |  | $ | 13,501 |  |  | $ | 12,913 |
Less: Valuation allowance |  | (3,382 | ) |  | (1,651 | )
Net deferred income tax assets |  | $ | 10,119 |  |  | $ | 11,262 |
Deferred income tax liabilities: |  |  |  |  |  |
Inventory basis differences |  | $ | (16 | ) |  | $ | (310 | )
Depreciation |  | (5,289 | ) |  | (4,624 | )
Intangible assets |  | (10,046 | ) |  | (7,934 | )
Deferred revenue |  | — |  |  | — |
Expenses not currently deductible for tax purposes |  | (593 | ) |  | (642 | )
Total deferred income tax liabilities |  | $ | (15,944 | ) |  | $ | (13,510 | )
Net deferred income taxes |  | $ | (5,825 | ) |  | $ | (2,248 | )
Schedule of Unrecognized Tax Benefits Roll Forward |
|  | December 31,
|  | 2016 |  | 2015
Balance as of beginning of year |  | $ | 301,000 |  |  | $ | 388,000 |
Additions for tax positions related to the current year |  | 51,000 |  |  | 63,000 |
Additions for tax positions related to prior years |  | — |  |  | — |
Reduction due to lapse of statute of limitations |  | (117,000 | ) |  | (150,000 | )
Balance as of end of year |  | $ | 235,000 |  |  | $ | 301,000 |

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