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v3.20.4

Income Taxes, Deferred Tax Assets and Liabilities, Operating Loss Carryovers (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019
Deferred tax assets [Abstract] |  |  |  |
Benefit plans |  |  | $ 7,665 | $ 6,293
Liabilities and reserves |  |  | 19,291 | 21,085
Operating loss and credit carryovers | [1] |  | 77,756 | 82,000
Other |  |  | 13,228 | 1,126
Gross deferred tax assets |  |  | 117,940 | 110,504
Valuation allowance | [1] |  | (47,813) | (54,326)
Deferred tax assets |  |  | 70,127 | 56,178
Deferred tax liabilities [Abstract] |  |  |  |
Property, plant, and equipment |  |  | (31,709) | (29,869)
Goodwill |  |  | (22,012) | (21,744)
Other |  |  | 0 | (5,192)
Deferred tax liabilities |  |  | (53,721) | (56,805)
Net deferred tax assets |  |  | 16,406 |
Net deferred tax (liabilities) |  |  |  | (627)
Increase in valuation allowance amount |  | $ 16,200 |  |
Operating Loss Carryforwards [Abstract] |  |  |  |
Operating loss carryovers, tax credit |  |  | 39,300 |
Deferred tax assets held for sale |  |  | 100 |
Deferred tax liabilities, held for sale |  |  |  | $ 600
Undistributed earnings |  |  | 625,000 |
Withholding of tax liability |  |  | 28,300 |
Foreign [Member] |  |  |  |
Operating Loss Carryforwards [Abstract] |  |  |  |
Operating loss carryovers |  |  | 110,000 |
Operating loss carryovers, subject to expiration |  |  | 11,800 |
Operating loss carryovers, not subject to expiration |  |  | 98,200 |
State [Member] |  |  |  |
Operating Loss Carryforwards [Abstract] |  |  |  |
Operating loss carryovers |  |  | 132,600 |
Operating loss carryovers, subject to expiration |  |  | $ 132,600 |
[1] | In the first quarter of 2019, the Company recognized an increase in its foreign tax credit carryover and corresponding valuation allowance of $16.2 million, related to the finalization of certain tax regulations.

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