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Note 9 - Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2022
Notes Tables |
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] |
(in thousands) |  | 2022 |  |  | 2021 |  |  | 2020 |
Current: |  |  |  |  |  |  |  |  |  |  |  |
U.S. Federal |  | $ | 1,609 |  |  | $ | 1,103 |  |  | $ | - |
U.S. State |  |  | 456 |  |  |  | 101 |  |  |  | 21 |
Foreign |  |  | 31,307 |  |  |  | 22,862 |  |  |  | 5,950 |
Total current |  |  | 33,372 |  |  |  | 24,066 |  |  |  | 5,971 |
Deferred: |  |  |  |  |  |  |  |  |  |  |  |
U.S. Federal |  |  | (9 | ) |  |  | 5 |  |  |  | 8 |
Foreign |  |  | (3,495 | ) |  |  | 948 |  |  |  | (5,313 | )
Total deferred |  |  | (3,504 | ) |  |  | 953 |  |  |  | (5,305 | )
|  | $ | 29,868 |  |  | $ | 25,019 |  |  | $ | 666 |
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block] |
(in thousands) |  | 2022 |  |  | 2021 |  |  | 2020 |
U.S. |  | $ | 9,180 |  |  | $ | 30,588 |  |  | $ | (25,005 | )
Foreign |  |  | 117,535 |  |  |  | 161,756 |  |  |  | 11,828 |
Total |  | $ | 126,715 |  |  | $ | 192,344 |  |  | $ | (13,177 | )
Schedule of Deferred Tax Assets and Liabilities [Table Text Block] |
(in thousands) |  | 2022 |  |  | 2021 |
Deferred tax assets: |  |  |  |  |  |  |  |
Inventory, receivable and warranty reserves |  | $ | 13,599 |  |  | $ | 12,166 |
Net operating loss carryforwards |  |  | 39,545 |  |  |  | 44,806 |
Tax credit carryforwards |  |  | 29,646 |  |  |  | 31,264 |
Capitalized R&D |  |  | 19,819 |  |  |  | 8,728 |
Accrued employee benefits |  |  | 4,416 |  |  |  | 5,695 |
Stock-based compensation |  |  | 2,990 |  |  |  | 2,222 |
Lease liabilities |  |  | 3,965 |  |  |  | 4,500 |
Other |  |  | 472 |  |  |  | 2,674 |
Gross deferred tax assets |  |  | 114,452 |  |  |  | 112,055 |
Less valuation allowance |  |  | (89,234 | ) |  |  | (76,250 | )
Total deferred tax assets |  |  | 25,218 |  |  |  | 35,805 |
Deferred tax liabilities: |  |  |  |  |  |  |  |
Intangible assets and other acquisition basis differences |  |  | 38,921 |  |  |  | 48,657 |
Operating lease right-of-use assets |  |  | 3,573 |  |  |  | 4,066 |
Unremitted earnings of foreign subsidiaries |  |  | 153 |  |  |  | 4,207 |
Total deferred tax liabilities |  |  | 42,647 |  |  |  | 56,930 |
Net deferred tax liabilities |  | $ | (17,429 | ) |  | $ | (21,125 | )
(in thousands) |  | 2022 |  |  | 2021 |
Other assets (long-term) |  | $ | 3,930 |  |  | $ | 4,762 |
Long-term deferred income tax liabilities |  |  | (21,359 | ) |  |  | (25,887 | )
Net deferred tax liabilities |  | $ | (17,429 | ) |  | $ | (21,125 | )
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] |
(in thousands) |  | 2022 |  |  | 2021 |  |  | 2020 |
Tax provision at U.S. 21% statutory rate |  | $ | 26,610 |  |  | $ | 40,392 |  |  | $ | (2,757 | )
State income taxes, net of federal tax benefit |  |  | (1,535 | ) |  |  | 2,246 |  |  |  | (1,160 | )
Settlements, adjustments and releases from statute expirations |  |  | 348 |  |  |  | (787 | ) |  |  | (118 | )
Federal R&D credits |  |  | (1,679 | ) |  |  | (943 | ) |  |  | (46 | )
Stock-based compensation |  |  | (572 | ) |  |  | (4,802 | ) |  |  | 727 |
Excess executive compensation |  |  | 946 |  |  |  | 1,608 |  |  |  | 491 |
Change in valuation allowance |  |  | 13,307 |  |  |  | (9,882 | ) |  |  | (1,691 | )
Exemption of PTG gain |  |  | - |  |  |  | (12,378 | ) |  |  | - |
Dividend, net of foreign tax credits |  |  | 13 |  |  |  | 693 |  |  |  | 1,224 |
GILTI, net of foreign tax credits |  |  | 3,458 |  |  |  | 9,343 |  |  |  | 4,191 |
Foreign rate differential |  |  | (6,131 | ) |  |  | (1,023 | ) |  |  | (1,512 | )
Other, net |  |  | (4,897 | ) |  |  | 552 |  |  |  | 1,317 |
|  | $ | 29,868 |  |  | $ | 25,019 |  |  | $ | 666 |
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] |
(in thousands) |  | 2022 |  |  | 2021 |  |  | 2020 |
Balance at beginning of year |  | $ | 33,391 |  |  | $ | 33,696 |  |  | $ | 34,740 |
Additions for tax positions of current year |  |  | 910 |  |  |  | 686 |  |  |  | 817 |
Reductions for tax positions of prior years |  |  | (428 | ) |  |  | (83 | ) |  |  | (425 | )
Reductions due to lapse of the statute of limitations |  |  | (354 | ) |  |  | (1,012 | ) |  |  | (304 | )
Reductions due to settlements |  |  | - |  |  |  | - |  |  |  | (1,134 | )
Foreign exchange rate impact |  |  | (151 | ) |  |  | 104 |  |  |  | 2 |
Balance at end of year |  | $ | 33,368 |  |  | $ | 33,391 |  |  | $ | 33,696 |

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- Definition Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32639-109319 + Details
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