| Income Tax Disclosure [Abstract] | Period [Axis] |
|---|
2015-01-01 - 2015-12-31 |
|---|
Income Tax Disclosure [Abstract] | |
Schedule of income before income tax, domestic and foreign | The following is a summary of the Company's U.S. and non-U.S. net (loss) income before income tax: | | | | | | | | | | | | | | Years Ended December 31, | | 2015 | | 2014 | | 2013 | | (In thousands) | U.S. | $ | (34,567 | ) | | $ | (33,079 | ) | | $ | (25,741 | ) | Non-U.S. | 5,028 |
| | 4,818 |
| | 5,114 |
| Net loss before income tax | $ | (29,539 | ) | | $ | (28,261 | ) | | $ | (20,627 | ) |
|
Schedule of components of income tax expense | The components of the Company's income tax expense (benefit) are as follows: | | | | | | | | | | | | | | Years Ended December 31, | | 2015 | | 2014 | | 2013 | | (In thousands) | Current: | | | | | | Federal | $ | 63 |
| | $ | 181 |
| | $ | 220 |
| State and local | 12 |
| | (42 | ) | | 626 |
| Foreign | 1,727 |
| | 2,804 |
| | 2,143 |
| Total current income tax expense | 1,802 |
| | 2,943 |
| | 2,989 |
| | | | | | | Deferred: | | | | | | Federal | (387 | ) | | (4,248 | ) | | (6,640 | ) | State and local | (56 | ) | | (487 | ) | | (1,483 | ) | Foreign | (514 | ) | | 27 |
| | (215 | ) | Total deferred income tax benefit | (957 | ) | | (4,708 | ) | | (8,338 | ) | Total income tax expense (benefit) | $ | 845 |
| | $ | (1,765 | ) | | $ | (5,349 | ) |
|
Schedule of effective income tax rate reconciliation | A reconciliation of the provision for income taxes at the U.S. Federal statutory income tax rate of 35% to the Company's effective income tax rate is as follows: | | | | | | | | | | | | | | Years Ended December 31, | | 2015 | | 2014 | | 2013 | | (In thousands) | Tax at U.S. Federal statutory rate of 35% | $ | (10,339 | ) | | $ | (9,891 | ) | | $ | (7,219 | ) | State taxes, net of federal income tax effect | (1,987 | ) | | (1,186 | ) | | (557 | ) | Stock-based compensation expense | 211 |
| | 622 |
| | 1,886 |
| Non-deductible expenses | 1,251 |
| | 759 |
| | 438 |
| Foreign taxes | 795 |
| | 2,043 |
| | 1,348 |
| Research and development credit | (984 | ) | | (647 | ) | | (1,008 | ) | Other | 138 |
| | 88 |
| | (237 | ) | Valuation allowance | 11,760 |
| | 6,447 |
| | — |
| Total income tax expense (benefit) | $ | 845 |
| | $ | (1,765 | ) | | $ | (5,349 | ) | Effective tax rate | (2.9 | )% | | 6.2 | % | | 25.9 | % |
|
Schedule of deferred tax assets and liabilities | Following is a summary of the components of deferred tax assets and deferred tax liabilities at December 31, 2015 and 2014: | | | | | | | | | | Years Ended December 31, | | 2015 | | 2014 | | (In thousands) | Deferred tax assets: | | | | Net operating loss carryforwards | $ | 7,975 |
| | $ | 10,008 |
| Research and development tax credit carryforwards | 9,652 |
| | 8,185 |
| Stock-based compensation | 6,723 |
| | 5,529 |
| Accrued expenses | 4,629 |
| | 4,108 |
| AMT tax credit carryforwards | 1,790 |
| | 1,727 |
| Allowance for doubtful accounts | 1,660 |
| | 1,264 |
| Other | 4,613 |
| | 4,275 |
| Total deferred tax assets | 37,042 |
| | 35,096 |
| Valuation allowance | (19,576 | ) | | (6,447 | ) | Deferred tax assets, net of valuation allowance | 17,466 |
| | 28,649 |
| Deferred tax liabilities: | | | | Depreciation and amortization | (16,952 | ) | | (28,649 | ) | Total deferred tax liabilities | (16,952 | ) | | (28,649 | ) | Net deferred tax assets, net of valuation allowance | $ | 514 |
| | $ | — |
|
|
Schedule of unrecognized tax benefits | The following table summarizes changes to the Company's unrecognized tax benefits, excluding interest and penalties: | | | | | | | | | | | | | | Years Ended December 31, | | 2015 | | 2014 | | 2013 | | (In thousands) | Balance as of January 1 | $ | 4,688 |
| | $ | 3,945 |
| | $ | 3,335 |
| Additions based on tax positions related to the current year | 685 |
| | 540 |
| | 389 |
| Additions for prior year tax positions | 168 |
| | 289 |
| | 221 |
| Reductions from expirations of applicable statutes of limitations | (80 | ) | | (86 | ) | | — |
| Balance as of December 31 | $ | 5,461 |
| | $ | 4,688 |
| | $ | 3,945 |
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