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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2021
Income Tax Disclosure [Abstract] |
Schedule of Provision for Income Taxes | The provision (benefit) for income taxes for the years ended December 31, 2021, 2020 and 2019 consists of the following:
| 2021 |  | 2020 |  | 2019
Current tax expense (benefit): |  |  |  |  |
Federal | $ | (97) |  |  | $ | (729) |  |  | $ | 96 |
State | 609 |  |  | 86 |  |  | 444 |
Foreign | 7,046 |  |  | 6,963 |  |  | 8,375 |
| 7,558 |  |  | 6,320 |  |  | 8,915 |
Deferred income tax expense (benefit): |  |  |  |  |
Federal | 3,466 |  |  | (12,253) |  |  | (3,970) |
State | 1,449 |  |  | (1,173) |  |  | (938) |
Foreign | (1,910) |  |  | (808) |  |  | (1,402) |
| 3,005 |  |  | (14,234) |  |  | (6,310) |
Provision (benefit) for income taxes | $ | 10,563 |  |  | $ | (7,914) |  |  | $ | 2,605 |
Schedule of Effective Income Tax Rate Reconciliation | A reconciliation between income taxes computed at the statutory federal rate and the provision (benefit) for income taxes for the years ended December 31, 2021, 2020 and 2019 follows:
| 2021 |  | 2020 |  | 2019
Tax provision at statutory rate based on income before income taxes | 21.0 | % |  | 21.0 | % |  | 21.0 | %
Stock-based compensation | (9.4) |  |  | (267.7) |  |  | (15.4) |
Federal research credit | (2.3) |  |  | (124.2) |  |  | (4.0) |
Valuation allowance | (2.2) |  |  | 49.7 |  |  | 1.9 |
US tax on worldwide earnings at different rates | (0.4) |  |  | (123.7) |  |  | 7.9 |
Settlement of taxing authority examinations | — |  |  | (122.9) |  |  | (7.7) |
Tax treaty protocols | — |  |  | — |  |  | (2.9) |
Non deductible/non-taxable items | 0.8 |  |  | 28.6 |  |  | 2.8 |
Foreign income taxes | 3.1 |  |  | 79.9 |  |  | 4.5 |
State income taxes, net of federal tax benefit | 3.7 |  |  | (24.5) |  |  | 0.3 |
Other, net | 0.1 |  |  | (10.1) |  |  | (0.1) |
| 14.4 | % |  | (493.9) | % |  | 8.3 | %
Schedule of Deferred Tax Assets and Liabilities | The tax effects of the significant temporary differences which comprise the deferred income tax assets and liabilities at December 31, 2021 and 2020 are as follows:
| 2021 |  | 2020
Assets: |  |  |
Inventory | $ | 4,694 |  |  | $ | 4,649 |
Net operating losses | 18,383 |  |  | 22,197 |
Capitalized research and development | 4,173 |  |  | 5,187 |
Deferred compensation | 2,563 |  |  | 2,240 |
Accounts receivable | 3,147 |  |  | 2,784 |
Compensation and benefits | 6,583 |  |  | 7,540 |
Accrued pension | 3,930 |  |  | 5,348 |
Research and development credit | 15,542 |  |  | 13,540 |
Convertible notes hedge | 4,869 |  |  | 6,999 |
Lease liabilities | 3,573 |  |  | 4,452 |
Other | 5,741 |  |  | 6,793 |
Less: valuation allowances | (786) |  |  | (2,721) |
| 72,412 |  |  | 79,008 |
Liabilities: |  |  |
Goodwill and intangible assets | 106,065 |  |  | 104,119 |
Depreciation | 2,546 |  |  | 2,512 |
State taxes | 11,833 |  |  | 9,614 |
Unremitted foreign earnings | 2,449 |  |  | 2,423 |
Convertible notes debt discount | 4,915 |  |  | 7,060 |
Lease right-of-use assets | 3,484 |  |  | 4,313 |
| 131,292 |  |  | 130,041 |
Net liability | $ | (58,880) |  |  | $ | (51,033) |
Schedule of Income before Income Tax | Income before income taxes consists of the following U.S. and foreign income:
| 2021 |  | 2020 |  | 2019
U.S. income | $ | 45,260 |  |  | $ | (16,026) |  |  | $ | 5,332 |
Foreign income | 27,845 |  |  | 17,629 |  |  | 25,893 |
Total income | $ | 73,105 |  |  | $ | 1,603 |  |  | $ | 31,225 |
Schedule of Unrecognized Tax Benefits Rollforward | The following table summarizes the activity related to our unrecognized tax benefits for the years ending December 31,:
| 2021 |  | 2020 |  | 2019
Balance as of January 1, | $ | 200 |  |  | $ | 2,170 |  |  | $ | 3,073 |
Increases for positions taken in current periods | — |  |  | — |  |  | 1,650 |
Decreases in unrecorded tax positions related to settlement with the taxing authorities | — |  |  | (1,970) |  |  | (2,404) |
Decreases in unrecorded tax positions related to lapse of statute of limitations | — |  |  | — |  |  | (149) |
Balance as of December 31, | $ | 200 |  |  | $ | 200 |  |  | $ | 2,170 |

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