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Income Taxes (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Current: |  |  |
U.S. federal | $ 40,234 | $ 22,001 | $ 12,079
Foreign | 42,487 | 61,976 | 29,968
State and local | 5,894 | 4,506 | 2,647
Total current | 88,615 | 88,483 | 44,694
Deferred: |  |  |
U.S. federal | (50,038) | (1,644) | 6,567
Foreign | 25,356 | (12,243) | (4,585)
State and local | (3,902) | 897 | (126)
Total deferred | (28,584) | (12,990) | 1,856
Total provision | 60,031 | 75,493 | 46,550
Effective Income Tax Rate Reconciliation, Amount [Abstract] |  |  |
Statutory federal income tax at 21% | 39,200 | 67,700 | 32,900
Foreign impact, net | (1,300) | 4,500 | (5,900)
Impact of U.S. Tax Reform Act | 0 | 0 | (5,700)
Change in valuation allowances | 26,900 | 300 | 15,700
State and local income taxes, net | 2,000 | 5,400 | 3,700
Research and development credit | (5,200) | (5,400) | 0
Other, net | $ (1,600) | $ 3,000 | $ 5,900
Effective tax rate | 32.10% | 23.40% | 29.80%
Unrecorded foreign undistributed earnings taxes | $ 19,100 |  |
Deferred tax assets related to: |  |  |
Retirement benefits | 29,754 | $ 25,214 |
Net operating loss carryforwards | 109,020 | 101,193 |
Compensation accruals | 20,290 | 24,685 |
Inventories | 36,402 | 34,846 |
Credit and capital loss carryforwards | 136,956 | 131,744 |
Warranty and accrued liabilities | 27,483 | 18,741 |
Bad debt reserve | 17,455 | 30,884 |
Operating lease liability | 25,446 | 27,799 |
Other | 38,457 | 25,339 |
Total deferred tax assets | 441,263 | 420,445 |
Valuation allowances | (287,787) | (266,414) |
Net deferred tax assets | 153,476 | 154,031 |
Deferred tax liabilities related to: |  |  |
Property, plant and equipment | (11,714) | (26,311) |
Goodwill and intangibles | (101,818) | (114,122) |
Foreign undistributed earnings | (50,332) | (67,930) |
Operating lease right-of-use-assets | (25,799) | (27,799) |
Other | (17,621) | (12,623) |
Total deferred tax liabilities | (207,284) | (248,785) |
Deferred tax liabilities, net | (53,808) | (94,754) |
Operating loss carryforward | 481,700 |  |
Net operating loss carryforwards and other deferred tax assets | 154,100 |  |
Earnings before income taxes comprised: |  |  |
U.S. | 73,109 | 110,500 | $ 68,838
Foreign | 113,703 | 211,933 | 87,600
Total | 186,812 | 322,433 | 156,438
Reconciliation of the total gross amount of unrecognized tax benefits, excluding interest and penalities: |  |  |
Balance — | 40,600 | 41,200 | 51,500
Gross amount of increase (decrease) in unrecognized tax benefits resulting from tax positions taken: |  |  |
During a prior year |  |  | (6,600)
During a prior year | 3,800 | 8,800 |
During the current period | 11,100 | 6,300 | 4,000
Decreases in unrecognized tax benefits relating to: |  |  |
Settlements with taxing authorities | (200) | (11,400) | (2,700)
Lapse of the applicable statute of limitations | (2,500) | (3,200) | (3,700)
Increase (decrease) in unrecognized tax benefits relating to foreign currency translation adjustments | 2,000 |  |
Increase (decrease) in unrecognized tax benefits relating to foreign currency translation adjustments |  | (1,100) | (1,300)
Balance — | 54,800 | $ 40,600 | $ 41,200
Gross unrecognized tax benefits | 73,400 |  |
Gross unrecognized tax benefits, accrued interest and penalties | 18,600 |  |
Unrecognized tax benefits, if recognized, would favorably impact effective tax rate | 62,300 |  |
Unrecognized tax benefits minimum amount of estimated reduction within the next twelve months | 8,000 |  |
State and Local Jurisdiction |  |  |
Deferred tax liabilities related to: |  |  |
Operating loss carryforward | 33,100 |  |
Foreign Tax Authority |  |  |
Deferred tax liabilities related to: |  |  |
Operating loss carryforward | 97,800 |  |
Tax credit carryforward | 35,900 |  |
Tax credit carryforward | $ 35,900 |  |

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- Definition Amount of increase in valuation and qualifying accounts and reserves from charge to cost and expense. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column C)(1)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
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