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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2021
Income Tax Disclosure [Abstract] |
Pre-Tax Income (Loss) by Jurisdiction | In 2021, 2020 and 2019, pre-tax income (loss) was attributed to the following jurisdictions:
| Year Ended December 31,
(In thousands) | 2021 |  | 2020 |  | 2019
Domestic operations | $ | (38,024) |  |  | $ | (15,711) |  |  | $ | (28,929) |
Foreign operations | 54,104 |  |  | 59,616 |  |  | 39,331 |
Total pre-tax income (loss) | $ | 16,080 |  |  | $ | 43,905 |  |  | $ | 10,402 |
Provision for Income Taxes | The provision for income taxes charged to operations was as follows:
| Year Ended December 31,
(In thousands) | 2021 |  | 2020 |  | 2019
Current tax expense: |  |  |  |  |
U.S. federal | $ | 2 |  |  | $ | (193) |  |  | $ | (188) |
State and local | 75 |  |  | (54) |  |  | 82 |
Foreign | 12,386 |  |  | 6,525 |  |  | 8,217 |
Total current | 12,463 |  |  | 6,278 |  |  | 8,111 |
Deferred tax (benefit) expense: |  |  |  |  |
U.S. federal | 584 |  |  | — |  |  | — |
State and local | 90 |  |  | — |  |  | — |
Foreign | (2,358) |  |  | (945) |  |  | (1,339) |
Total deferred | (1,684) |  |  | (945) |  |  | (1,339) |
Total provision for income taxes | $ | 10,779 |  |  | $ | 5,333 |  |  | $ | 6,772 |
Net Deferred Tax Assets | Net deferred tax assets were comprised of the following:
| December 31,
(In thousands) | 2021 |  | 2020
Deferred tax assets: |  |  |
Accrued liabilities | $ | 6,483 |  |  | $ | — |
Amortization of intangible assets | 1,412 |  |  | 1,904 |
Capitalized inventory costs | 4,183 |  |  | 2,945 |
Depreciation | 4,289 |  |  | 2,530 |
Income tax credits | 17,513 |  |  | 15,558 |
Inventory reserves | 2,621 |  |  | 3,383 |
Net operating losses | 3,512 |  |  | 2,844 |
Operating lease obligations | 4,469 |  |  | 4,639 |
Stock-based compensation | 4,569 |  |  | 4,600 |
Other | 4,431 |  |  | 409 |
Total deferred tax assets | 53,482 |  |  | 38,812 |
Deferred tax liabilities: |  |  |
Accrued liabilities | — |  |  | (1,939) |
Accounts receivable | (10,919) |  |  | (710) |
Right of use assets | (4,690) |  |  | (4,577) |
Other | — |  |  | (29) |
Total deferred tax liabilities | (15,609) |  |  | (7,255) |
Net deferred tax assets before valuation allowance | 37,873 |  |  | 31,557 |
Less: Valuation allowance | (32,538) |  |  | (27,906) |
Net deferred tax assets | $ | 5,335 |  |  | $ | 3,651 |
Reconciliation of Tax Provision at Statutory U.S. Rate to Provision for Income Taxes | 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) | 2021 |  | 2020 |  | 2019
Tax provision at statutory U.S. rate | $ | 3,377 |  |  | $ | 9,220 |  |  | $ | 2,185 |
Increase (decrease) in tax provision resulting from: |  |  |  |  |
Federal research and development credits | (1,391) |  |  | (2,119) |  |  | (884) |
Foreign permanent benefit | (1,137) |  |  | (2,842) |  |  | (856) |
Foreign tax rate differential | (2,647) |  |  | (1,595) |  |  | (1,810) |
Foreign undistributed earnings, net of credits | 6,902 |  |  | 3,319 |  |  | 1,181 |
Liquidation of Cayman subsidiary | 745 |  |  | — |  |  | — |
Non-deductible items | 1,198 |  |  | 1,637 |  |  | 1,236 |
Non-territorial income | (2,993) |  |  | (2,493) |  |  | (1,806) |
Provision to return | (533) |  |  | (343) |  |  | 584 |
Sale of Argentina subsidiary | 2,084 |  |  | — |  |  | — |
State and local taxes, net | (1,435) |  |  | (1,932) |  |  | (1,903) |
Stock-based compensation | (616) |  |  | (266) |  |  | 262 |
Tax rate change | — |  |  | (1,527) |  |  | (412) |
Uncertain tax positions | — |  |  | (1,565) |  |  | (294) |
Valuation allowance | 4,632 |  |  | 3,109 |  |  | 7,524 |
Withholding tax | 2,333 |  |  | 2,320 |  |  | 1,082 |
Other | 260 |  |  | 410 |  |  | 683 |
Tax provision | $ | 10,779 |  |  | $ | 5,333 |  |  | $ | 6,772 |
Changes to Gross Unrecognized Tax Benefits | Changes to our gross unrecognized tax benefits were as follows:
| Year Ended December 31,
(In thousands) | 2021 |  | 2020 |  | 2019
Balance at beginning of period | $ | 3,020 |  |  | $ | 4,094 |  |  | $ | 4,040 |
Additions as a result of tax provisions taken during the current year | 226 |  |  | 274 |  |  | 473 |
Foreign currency translation | (13) |  |  | 20 |  |  | (100) |
Lapse in statute of limitations | — |  |  | (51) |  |  | (92) |
Settlements | (232) |  |  | — |  |  | (227) |
Other | — |  |  | (1,317) |  |  | — |
Balance at end of period | $ | 3,001 |  |  | $ | 3,020 |  |  | $ | 4,094 |

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