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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2015
Income Tax Disclosure [Abstract] |
Schedule of Income before Income Tax | Pre-tax income was attributed to the following jurisdictions:
| Year Ended December 31,
(In thousands) | 2015 |  | 2014 |  | 2013
Domestic operations | $ | (6,857 | ) |  | $ | (2,793 | ) |  | $ | 2,425 |
Foreign operations | 42,832 |  |  | 43,244 |  |  | 26,611 |
Total | $ | 35,975 |  |  | $ | 40,451 |  |  | $ | 29,036 |
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) | 2015 |  | 2014 |  | 2013
Current tax expense: |  |  |  |  |
U.S. federal | $ | 2,726 |  |  | $ | 47 |  |  | $ | 971 |
State and local | 189 |  |  | 49 |  |  | 254 |
Foreign | 9,028 |  |  | 8,127 |  |  | 6,426 |
Total current | 11,943 |  |  | 8,223 |  |  | 7,651 |
Deferred tax (benefit) expense: |  |  |  |  |
U.S. federal | (4,588 | ) |  | (687 | ) |  | (101 | )
State and local | (87 | ) |  | 74 |  |  | (67 | )
Foreign | (466 | ) |  | 307 |  |  | (1,410 | )
Total deferred | (5,141 | ) |  | (306 | ) |  | (1,578 | )
Total provision for income taxes | $ | 6,802 |  |  | $ | 7,917 |  |  | $ | 6,073 |
Schedule of Deferred Tax Assets and Liabilities | Net deferred tax assets were comprised of the following:
| December 31,
(In thousands) | 2015 |  | 2014
Deferred tax assets: |  |  |
Inventory reserves | $ | 1,228 |  |  | $ | 904 |
Capitalized research costs | 52 |  |  | 79 |
Capitalized inventory costs | 926 |  |  | 684 |
Net operating losses | 582 |  |  | 1,151 |
Acquired intangible assets | 148 |  |  | 143 |
Accrued liabilities | 5,194 |  |  | 4,168 |
Income tax credits | 11,251 |  |  | 8,568 |
Stock-based compensation | 2,064 |  |  | 1,749 |
Total deferred tax assets | 21,445 |  |  | 17,446 |
Deferred tax liabilities: |  |  |
Depreciation | (2,639 | ) |  | (4,402 | )
Allowance for doubtful accounts | (223 | ) |  | (180 | )
Amortization of intangible assets | (1,274 | ) |  | (2,154 | )
Other | (2,752 | ) |  | (2,256 | )
Total deferred tax liabilities | (6,888 | ) |  | (8,992 | )
Net deferred tax assets before valuation allowance | 14,557 |  |  | 8,454 |
Less: Valuation allowance | (6,678 | ) |  | (5,716 | )
Net deferred tax assets | $ | 7,879 |  |  | $ | 2,738 |
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) | 2015 |  | 2014 |  | 2013
Tax provision at statutory U.S. rate | $ | 12,232 |  |  | $ | 13,753 |  |  | $ | 9,872 |
Increase (decrease) in tax provision resulting from: |  |  |  |  |
State and local taxes, net | (554 | ) |  | (580 | ) |  | (397 | )
Foreign tax rate differential | (5,762 | ) |  | (7,150 | ) |  | (3,804 | )
Nondeductible items | 874 |  |  | 1,093 |  |  | 989 |
Federal research and development credits | (678 | ) |  | (842 | ) |  | (1,149 | )
Change in deductibility of social insurance | 649 |  |  | 688 |  |  | 214 |
Valuation allowance | 621 |  |  | 661 |  |  | 520 |
Foreign permanent benefit | (675 | ) |  | — |  |  | — |
Other | 95 |  |  | 294 |  |  | (172 | )
Tax provision | $ | 6,802 |  |  | $ | 7,917 |  |  | $ | 6,073 |
Schedule of Unrecognized Tax Benefits Roll Forward | were as follows:
| Year ended December 31,
(In thousands) | 2015 |  | 2014 |  | 2013
Balance at beginning of period | $ | 3,486 |  |  | $ | 3,490 |  |  | $ | 5,006 |
Additions as a result of tax provisions taken during the current year | 463 |  |  | 213 |  |  | 357 |
Subtractions as a result of tax provisions taken during the prior year | (161 | ) |  | (150 | ) |  | (126 | )
Foreign currency translation | (79 | ) |  | (8 | ) |  | 45 |
Lapse in statute of limitations | (241 | ) |  | (59 | ) |  | (63 | )
Settlements | — |  |  | — |  |  | (1,729 | )
Other | 1 |  |  | $ | — |  |  | $ | — |
Balance at end of period | $ | 3,469 |  |  | $ | 3,486 |  |  | $ | 3,490 |

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