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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 | For the years ended December 31, 2016, 2015 and 2014, income before income taxes is broken out between U.S. and foreign-sourced operations and consisted of the following (in thousands):
| 2016 |  | 2015 |  | 2014
Domestic | $ | 6,174 |  |  | $ | 9,470 |  |  | $ | 16,961 |
Foreign | 19,212 |  |  | 21,730 |  |  | 14,611 |
Total | $ | 25,386 |  |  | $ | 31,200 |  |  | $ | 31,572 |
Schedule of Components of Income Tax Expense (Benefit) | The components of the provision for income taxes for the years ended December 31, 2016, 2015 and 2014, consisted of the following (in thousands):
| 2016 |  | 2015 |  | 2014
Current expense (benefit): |  |  |  |  |  |  |  |
Federal | $ | 1,933 |  |  | $ | (17 | ) |  | $ | 1,316 |
State | 492 |  |  | 747 |  |  | 768 |
Foreign | 3,802 |  |  | 3,218 |  |  | 2,644 |
Total current expense | 6,227 |  |  | 3,948 |  |  | 4,728 |
Deferred expense (benefit): |  |  |  |  |  |  |  |
Federal | (144 | ) |  | 3,250 |  |  | 4,078 |
State | (195 | ) |  | 294 |  |  | (119 | )
Foreign | (623 | ) |  | (94 | ) |  | (89 | )
Total deferred (benefit) expense | (962 | ) |  | 3,450 |  |  | 3,870 |
Total income tax expense | $ | 5,265 |  |  | $ | 7,398 |  |  | $ | 8,598 |
Schedule of Effective Income Tax Rate Reconciliation | The difference between the income tax expense reported and amounts computed by applying the statutory federal rate of 35.0% to pretax income for the years ended December 31, 2016, 2015 and 2014, consisted of the following (in thousands):
| 2016 |  | 2015 |  | 2014
Computed federal income tax expense at statutory rate of 35% | $ | 8,885 |  |  | $ | 10,920 |  |  | $ | 11,050 |
State income taxes | 193 |  |  | 698 |  |  | 438 |
Tax credits | (1,164 | ) |  | (1,019 | ) |  | (888 | )
Production activity deduction | (53 | ) |  | — |  |  | — |
Foreign tax rate differential | (3,717 | ) |  | (3,564 | ) |  | (1,958 | )
Uncertain tax positions | 597 |  |  | 536 |  |  | (76 | )
Deferred compensation insurance assets | (307 | ) |  | 182 |  |  | (81 | )
Transaction-related expenses | 274 |  |  | — |  |  | — |
Other — including the effect of graduated rates | 557 |  |  | (355 | ) |  | 113 |
Total income tax expense | $ | 5,265 |  |  | $ | 7,398 |  |  | $ | 8,598 |
Schedule of Deferred Tax Assets and Liabilities | Deferred income tax assets and liabilities at December 31, 2016 and 2015, consisted of the following temporary differences and carry-forward items (in thousands):
| 2016 |  | 2015
Deferred income tax assets: |  |  |  |
Allowance for uncollectible accounts receivable | $ | 645 |  |  | $ | 531 |
Accrued compensation expense | 6,203 |  |  | 5,534 |
Inventory differences | 1,065 |  |  | 2,043 |
Net operating loss carryforwards | 27,742 |  |  | 11,434 |
Deferred revenue | 73 |  |  | 118 |
Stock-based compensation expense | 2,738 |  |  | 2,532 |
Federal research and development credit carryforward | 3,524 |  |  | 2,355 |
Foreign tax credits | 364 |  |  | 600 |
Other | 6,984 |  |  | 5,754 |
Total deferred income tax assets | 49,338 |  |  | 30,901 |
Deferred income tax liabilities: |  |  |  |  |
Prepaid expenses | (782 | ) |  | (841 | )
Property and equipment | (25,108 | ) |  | (24,467 | )
Intangible assets | (35,773 | ) |  | (6,495 | )
Other | (1,480 | ) |  | (1,077 | )
Total deferred income tax liabilities | (63,143 | ) |  | (32,880 | )
Valuation allowance | (3,786 | ) |  | (1,981 | )
Net deferred income tax assets (liabilities) | $ | (17,591 | ) |  | $ | (3,960 | )
Reported as: |  |  |
Deferred income tax assets - Current | $ | 8,219 |  |  | $ | 7,025 |
Deferred income tax assets - Long-term | 171 |  |  | — |
Deferred income tax liabilities - Current | — |  |  | — |
Deferred income tax liabilities - Long-term | (25,981 | ) |  | (10,985 | )
Net deferred income tax liabilities | $ | (17,591 | ) |  | $ | (3,960 | )
Summary of Income Tax Contingencies | A reconciliation of the beginning and ending amount of liabilities associated with uncertain tax benefits for the years ended December 31, 2016, 2015 and 2014, consisted of the following (in thousands):
Tabular Roll-forward | 2016 |  | 2015 |  | 2014
Unrecognized tax benefits, opening balance | $ | 1,982 |  |  | $ | 1,736 |  |  | $ | 2,129 |
Gross increases in tax positions taken in a prior year | 77 |  |  | 187 |  |  | 142 |
Gross increases in tax positions taken in the current year | 856 |  |  | 763 |  |  | 309 |
Lapse of applicable statute of limitations | (366 | ) |  | (704 | ) |  | (844 | )
Unrecognized tax benefits, ending balance | $ | 2,549 |  |  | $ | 1,982 |  |  | $ | 1,736 |

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- Definition Tabular disclosure for tax positions taken in the tax returns filed or to be filed for which it is more likely than not that the tax position will not be sustained upon examination by taxing authorities and other income tax contingencies. Includes, but is not limited to, interest and penalties, reconciliation of unrecognized tax benefits, unrecognized tax benefits that would affect the effective tax rate, tax years that remain subject to examination by tax jurisdictions, and information about positions for which it is reasonably possible that amounts unrecognized will significantly change within 12 months. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -URI http://asc.fasb.org/extlink&oid=65882285&loc=SL6600010-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32718-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32840-109319 + Details
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