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Note 6 - Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2020
Notes Tables |
Schedule Of Losses Before Income Tax Domestic And Foreign [Table Text Block] |
|  | Year Ended December 31, |
(In thousands) |  | 2020 |  |  | 2019 |  |  | 2018 |
Non-U.S. |  | $ | (137,225 | ) |  | $ | (44,205 | ) |  | $ | (99,607 | )
United States |  |  | (60,436 | ) |  |  | (69,290 | ) |  |  | (53,912 | )
|  | $ | (197,661 | ) |  | $ | (113,495 | ) |  | $ | (153,519 | )
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] |
|  | U.S. |  |  |  |  |  |  |  |  |
(In thousands) |  | Federal |  |  | State |  |  | Non-U.S. |  |  | Total |
Year Ended December 31, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current |  | $ | 962 |  |  |  | — |  |  |  | 16,718 |  |  |  | 17,680 |
Deferred |  |  | 531 |  |  |  | 250 |  |  |  | (209 | ) |  |  | 572 |
|  | $ | 1,493 |  |  |  | 250 |  |  |  | 16,509 |  |  |  | 18,252 |
Year Ended December 31, 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current |  | $ | 649 |  |  |  | — |  |  |  | 26,403 |  |  |  | 27,052 |
Deferred |  |  | 672 |  |  |  | — |  |  |  | — |  |  |  | 672 |
|  | $ | 1,321 |  |  |  | — |  |  |  | 26,403 |  |  |  | 27,724 |
Year Ended December 31, 2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current |  | $ | (21,005 | ) |  |  | — |  |  |  | 18,816 |  |  |  | (2,189 | )
Deferred |  |  | (30 | ) |  |  | — |  |  |  | 1,254 |  |  |  | 1,224 |
|  | $ | (21,035 | ) |  |  | — |  |  |  | 20,070 |  |  |  | (965 | )
Schedule Of Income Tax Expense Benefit Reconciliation [Table Text Block] |
|  | Year Ended December 31, |
(In thousands) |  | 2020 |  |  | 2019 |  |  | 2018 |
Computed “expected” tax benefit |  | $ | (41,509 | ) |  | $ | (23,834 | ) |  |  | (32,239 | )
Increase (reduction) resulting from: |  |  |  |  |  |  |  |  |  |  |  |
Foreign income taxed at different rates |  |  | 27,639 |  |  |  | 9,283 |  |  |  | 20,917 |
Uncertain tax positions |  |  | (62,833 | ) |  |  | 5,145 |  |  |  | 2,264 |
Nondeductible transaction costs |  |  | — |  |  |  | — |  |  |  | 1,091 |
Valuation allowance – deferred tax assets |  |  | 43,455 |  |  |  | 15,707 |  |  |  | 38,778 |
Valuation allowance -deferred tax true-up |  |  | (6,523 | ) |  |  | — |  |  |  | — |
Deferred tax true-up |  |  | 6,523 |  |  |  | — |  |  |  | — |
Foreign taxes |  |  | 12,520 |  |  |  | 20,778 |  |  |  | 13,012 |
State taxes |  |  | — |  |  |  | — |  |  |  | 246 |
Return to accrual |  |  | 11,401 |  |  |  | (2,247 | ) |  |  | (28,176 | )
162(m) - Executive compensation |  |  | 286 |  |  |  | 28 |  |  |  | 2,818 |
Subpart F income |  |  | 5,631 |  |  |  | 1,227 |  |  |  | — |
Other, net |  |  | 2,445 |  |  |  | 1,637 |  |  |  | (459 | )
|  | $ | (965 | ) |  | $ | 27,724 |  |  |  | 18,252 |
Schedule of Deferred Tax Assets and Liabilities [Table Text Block] |
|  | December 31, |  |  | December 31, |
(In thousands) |  | 2020 |  |  | 2019 |
Deferred tax assets: |  |  |  |  |  |  |  |
Accrued employee benefit plan costs |  | $ | 8,815 |  |  | $ | 7,422 |
Stock based compensation |  |  | 407 |  |  |  | 972 |
Net operating loss and tax credit carryforwards |  |  | 148,699 |  |  |  | 99,281 |
Restructuring fees not currently deductible for tax purposes |  |  | 1,415 |  |  |  | 2,264 |
Disallowed business interest expense carryforward |  |  | 5,546 |  |  |  | 5,105 |
Other |  |  | 2,518 |  |  |  | 3,380 |
Gross deferred tax assets |  |  | 167,400 |  |  |  | 118,424 |
Less valuation allowance |  |  | (140,428 | ) |  |  | (103,496 | )
Net deferred tax assets |  |  | 26,972 |  |  |  | 14,928 |
Deferred tax liabilities: |  |  |  |  |  |  |  |
Depreciation and amortization |  |  | (25,883 | ) |  |  | (11,246 | )
Outside basis difference deferred tax liability |  |  | (2,891 | ) |  |  | (2,892 | )
Foreign interest withholding tax |  |  | (859 | ) |  |  | — |
Other |  |  | (754 | ) |  |  | (2,981 | )
Gross deferred tax liabilities |  |  | (30,387 | ) |  |  | (17,119 | )
Net deferred tax assets (liabilities) |  | $ | (3,415 | ) |  | $ | (2,191 | )
Schedule Of Uncertain Tax Positions And Income Tax Payable [Table Text Block] |
|  | December 31, |  |  | December 31, |
(In thousands) |  | 2020 |  |  | 2019 |
Tax liabilities for uncertain tax positions |  | $ | 35,304 |  |  | $ | 48,577 |
Income tax payable |  |  | 15,928 |  |  |  | 13,760 |
Income tax receivable |  |  | 8,280 |  |  |  | 3,798 |
Summary of Income Tax Contingencies [Table Text Block] |
(In thousands) |  |  |  |
Balance at December 31, 2017 |  | $ | 404,571 |
Additions from GulfMark business combination |  |  | 8,857 |
Additions based on tax positions related to a prior year |  |  | 6,903 |
Settlement and lapse of statute of limitations |  |  | (2,953 | )
Reductions based on tax positions related to a prior year |  |  | (18,086 | )
Balance at December 31, 2018 (A) |  | $ | 399,292 |
Additions based on tax positions related to the current year |  |  | 14,741 |
Additions based on tax positions related to a prior year |  |  | 1,964 |
Settlement and lapse of statute of limitations |  |  | (1,897 | )
Reductions based on tax positions related to a prior year |  |  | (58 | )
Balance at December 31, 2019 (A) |  | $ | 414,042 |
Additions based on tax positions related to a prior year |  |  | 2,223 |
Settlement and lapse of statute of limitations |  |  | (64,458 | )
Reductions based on tax positions related to a prior year |  |  | (760 | )
Balance at December 31, 2020 (A) |  | $ | 351,047 |

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