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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2016
Income Tax Disclosure [Abstract] |
Schedule of Income (Loss) before Income Tax | Pre-tax income (loss) was attributed to the following jurisdictions:
| Year Ended December 31,
(In thousands) | 2016 |  | 2015 |  | 2014
Domestic operations | $ | 165 |  |  | $ | (6,857 | ) |  | $ | (2,793 | )
Foreign operations | 25,023 |  |  | 42,832 |  |  | 43,244 |
Total | $ | 25,188 |  |  | $ | 35,975 |  |  | $ | 40,451 |
Schedule of Components of Income Tax Expense (Benefit) | The provision for income taxes charged to operations were as follows:
| Year Ended December 31,
(In thousands) | 2016 |  | 2015 |  | 2014
Current tax expense: |  |  |  |  |
U.S. federal | $ | 1,748 |  |  | $ | 2,726 |  |  | $ | 47 |
State and local | 374 |  |  | 189 |  |  | 49 |
Foreign | 4,150 |  |  | 9,028 |  |  | 8,127 |
Total current | 6,272 |  |  | 11,943 |  |  | 8,223 |
Deferred tax (benefit) expense: |  |  |  |  |
U.S. federal | (1,416 | ) |  | (4,588 | ) |  | (687 | )
State and local | (356 | ) |  | (87 | ) |  | 74 |
Foreign | 304 |  |  | (466 | ) |  | 307 |
Total deferred | (1,468 | ) |  | (5,141 | ) |  | (306 | )
Total provision for income taxes | $ | 4,804 |  |  | $ | 6,802 |  |  | $ | 7,917 |
Schedule of Deferred Tax Assets and Liabilities | Net deferred tax assets were comprised of the following:
| December 31,
(In thousands) | 2016 |  | 2015
Deferred tax assets: |  |  |
Inventory reserves | $ | 1,396 |  |  | $ | 1,228 |
Capitalized research costs | 44 |  |  | 52 |
Capitalized inventory costs | 704 |  |  | 926 |
Net operating losses | 485 |  |  | 582 |
Acquired intangible assets | 136 |  |  | 148 |
Accrued liabilities | 4,739 |  |  | 5,194 |
Income tax credits | 12,509 |  |  | 11,251 |
Stock-based compensation | 3,376 |  |  | 2,064 |
Total deferred tax assets | 23,389 |  |  | 21,445 |
Deferred tax liabilities: |  |  |
Depreciation | (2,924 | ) |  | (2,639 | )
Allowance for doubtful accounts | (241 | ) |  | (223 | )
Amortization of intangible assets | (780 | ) |  | (1,274 | )
Other | (1,479 | ) |  | (2,752 | )
Total deferred tax liabilities | (5,424 | ) |  | (6,888 | )
Net deferred tax assets before valuation allowance | 17,965 |  |  | 14,557 |
Less: Valuation allowance | (8,635 | ) |  | (6,678 | )
Net deferred tax assets | $ | 9,330 |  |  | $ | 7,879 |
Schedule of Effective Income Tax Rate Reconciliation | The provision for income taxes differs from the amount of income tax determined by applying the applicable U.S. statutory federal income tax rate to pre-tax income from operations as a result of the following:
| Year Ended December 31,
(In thousands) | 2016 |  | 2015 |  | 2014
Tax provision at statutory U.S. rate | $ | 8,554 |  |  | $ | 12,232 |  |  | $ | 13,753 |
Increase (decrease) in tax provision resulting from: |  |  |  |  |
State and local taxes, net | (553 | ) |  | (554 | ) |  | (580 | )
Foreign tax rate differential | (3,244 | ) |  | (5,762 | ) |  | (7,150 | )
Nondeductible items | 839 |  |  | 874 |  |  | 1,093 |
Federal research and development credits | (710 | ) |  | (678 | ) |  | (842 | )
Change in deductibility of social insurance | 8 |  |  | 649 |  |  | 688 |
Valuation allowance | 1,598 |  |  | 621 |  |  | 661 |
Foreign permanent benefit | (2,110 | ) |  | (675 | ) |  | — |
Other | 422 |  |  | 95 |  |  | 294 |
Tax provision | $ | 4,804 |  |  | $ | 6,802 |  |  | $ | 7,917 |
Schedule of Unrecognized Tax Benefits Roll Forward | Changes to our gross unrecognized tax benefits were as follows:
| Year ended December 31,
(In thousands) | 2016 |  | 2015 |  | 2014
Balance at beginning of period | $ | 3,469 |  |  | $ | 3,486 |  |  | $ | 3,490 |
Additions as a result of tax provisions taken during the current year | 305 |  |  | 463 |  |  | 213 |
Subtractions as a result of tax provisions taken during the prior year | — |  |  | (161 | ) |  | (150 | )
Foreign currency translation | (93 | ) |  | (79 | ) |  | (8 | )
Lapse in statute of limitations | (67 | ) |  | (241 | ) |  | (59 | )
Settlements | — |  |  | — |  |  | — |
Other | 8 |  |  | 1 |  |  | — |
Balance at end of period | $ | 3,622 |  |  | $ | 3,469 |  |  | $ | 3,486 |

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