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Income taxes (Tables) | 12 Months Ended
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Dec. 31, 2021
Income Tax Disclosure [Abstract] |
Schedule of Income (Loss) Before Provision for Income Taxes | Income (loss) before provision for income taxes consisted of the following:
|  | Year Ended December 31, |
(U.S. Dollars, in thousands) |  | 2021 |  |  | 2020 |  |  | 2019 |
U.S. |  | $ | (5,987 | ) |  | $ | 5,556 |  |  | $ | (24,890 | )
Non-U.S. |  |  | (7,508 | ) |  |  | (5,924 | ) |  |  | (2,159 | )
Income (loss) before income taxes |  | $ | (13,495 | ) |  | $ | (368 | ) |  | $ | (27,049 | )
Schedule of Provision for Income Taxes | The provision for income taxes consists of the following:
|  | Year Ended December 31, |
(U.S. Dollars, in thousands) |  | 2021 |  |  | 2020 |  |  | 2019 |
U.S. |  |  |  |  |  |  |  |  |  |  |  |
Current |  | $ | (607 | ) |  | $ | (15,054 | ) |  | $ | (1,911 | )
Deferred |  |  | 24,292 |  |  |  | (29 | ) |  |  | 2,008 |
|  |  | 23,685 |  |  |  | (15,083 | ) |  |  | 97 |
Non-U.S. |  |  |  |  |  |  |  |  |  |  |  |
Current |  |  | 1,009 |  |  |  | 1,382 |  |  |  | 1,931 |
Deferred |  |  | 190 |  |  |  | 10,816 |  |  |  | (615 | )
|  |  | 1,199 |  |  |  | 12,198 |  |  |  | 1,316 |
Income tax expense (benefit) |  | $ | 24,884 |  |  | $ | (2,885 | ) |  | $ | 1,413 |
Schedule of Effective Income Tax Rate Reconciliation for Continuing Operations | The differences between the income tax provision at the U.S. federal statutory tax rate and the Company’s effective tax rate for the years ended December 31, 2021, 2020, and 2019, consist of the following:
|  | 2021 |  |  | 2020 |  |  | 2019 |
(U.S. Dollars, in thousands, except percentages) |  | Amount |  |  | Percent |  |  | Amount |  |  | Percent |  |  | Amount |  |  | Percent |
Statutory U.S. federal income tax rate |  | $ | (2,834 | ) |  |  | 21.0 | % |  | $ | (77 | ) |  |  | 21.0 | % |  | $ | (5,680 | ) |  |  | 21.0 | %
State taxes, net of U.S. federal benefit |  |  | (24 | ) |  |  | 0.2 |  |  |  | 1,151 |  |  |  | (312.8 | ) |  |  | 1,043 |  |  |  | (3.9 | )
Foreign rate differential, including withholding taxes |  |  | 480 |  |  |  | (3.6 | ) |  |  | (147 | ) |  |  | 39.9 |  |  |  | 131 |  |  |  | (0.5 | )
Valuation allowances, net |  |  | 27,819 |  |  |  | (206.1 | ) |  |  | 14,514 |  |  |  | (3,944.0 | ) |  |  | (165 | ) |  |  | 0.6 |
Research credits |  |  | (537 | ) |  |  | 4.0 |  |  |  | (982 | ) |  |  | 266.8 |  |  |  | (829 | ) |  |  | 3.1 |
Unrecognized tax benefits, net of settlements |  |  | (1,363 | ) |  |  | 10.1 |  |  |  | (17,321 | ) |  |  | 4,706.8 |  |  |  | (2,745 | ) |  |  | 10.1 |
Equity compensation |  |  | 1,091 |  |  |  | (8.1 | ) |  |  | 1,657 |  |  |  | (450.3 | ) |  |  | 626 |  |  |  | (2.3 | )
Executive compensation |  |  | 456 |  |  |  | (3.4 | ) |  |  | 375 |  |  |  | (101.9 | ) |  |  | 1,504 |  |  |  | (5.6 | )
Contingent consideration |  |  | (640 | ) |  |  | 4.7 |  |  |  | (1,460 | ) |  |  | 396.7 |  |  |  | 5,678 |  |  |  | (21.0 | )
Other, net |  |  | 436 |  |  |  | (3.2 | ) |  |  | (595 | ) |  |  | 161.8 |  |  |  | 1,850 |  |  |  | (6.7 | )
Income tax expense (benefit) /effective rate |  | $ | 24,884 |  |  |  | (184.4 | )% |  | $ | (2,885 | ) |  |  | 784.0 | % |  | $ | 1,413 |  |  |  | (5.2 | )%
Schedule of Deferred Tax Assets and Liabilities | The Company’s deferred tax assets and liabilities are as follows:
|  | December 31, |
(U.S. Dollars, in thousands) |  | 2021 |  |  | 2020 |
Intangible assets and goodwill |  | $ | 5,245 |  |  | $ | 2,475 |
Inventories and related reserves |  |  | 17,097 |  |  |  | 17,585 |
Deferred revenue and cost of goods sold |  |  | 3,888 |  |  |  | 4,035 |
Other accruals and reserves |  |  | 3,082 |  |  |  | 4,061 |
Accrued compensation |  |  | 7,784 |  |  |  | 8,734 |
Provision for expected credit losses |  |  | 1,217 |  |  |  | 1,178 |
Net operating loss and tax credit carryforwards |  |  | 42,546 |  |  |  | 42,569 |
Lease liabilities |  |  | 5,691 |  |  |  | 6,033 |
Other, net |  |  | 1,423 |  |  |  | 500 |
Total deferred tax assets |  |  | 87,973 |  |  |  | 87,170 |
Valuation allowance |  |  | (76,725 | ) |  |  | (50,496 | )
Deferred tax asset, net of valuation allowance |  | $ | 11,248 |  |  | $ | 36,674 |
Withholding taxes |  |  | (10 | ) |  |  | (40 | )
Property, plant, and equipment |  |  | (5,380 | ) |  |  | (5,975 | )
Right-of-use lease assets |  |  | (5,165 | ) |  |  | (5,617 | )
Deferred tax liability |  |  | (10,555 | ) |  |  | (11,632 | )
Net deferred tax assets |  | $ | 693 |  |  | $ | 25,042 |
Reported as: |  |  |  |  |  |  |  |
Deferred income tax assets |  |  | 1,771 |  |  |  | 25,042 |
Deferred income tax liabilities (classified within other long-term liabilities) |  |  | (1,078 | ) |  |  | — |
Net deferred tax assets |  | $ | 693 |  |  | $ | 25,042 |
Schedule of Gross Unrecognized Tax Benefits (Excluding Interest and Penalties) | A reconciliation of the gross unrecognized tax benefits (excluding interest and penalties) for the years ended December 31, 2021, and 2020, is shown below:
(U.S. Dollars, in thousands) |  | 2021 |  |  | 2020 |
Balance as of January 1, |  | $ | 4,629 |  |  | $ | 16,904 |
Additions for current year tax positions |  |  | 45 |  |  |  | 568 |
Increases for prior year tax positions |  |  | 110 |  |  |  | 84 |
Settlements of prior year tax positions |  |  | — |  |  |  | (29 | )
Expiration of statutes |  |  | (1,322 | ) |  |  | (12,898 | )
Balance as of December 31, |  | $ | 3,462 |  |  | $ | 4,629 |

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