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Shareholders' Equity Other Comprehensive Income (Loss) (Details) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Before-tax amount [Abstract] |  |  |  |
Foreign currency translation adjustment | $ (7,827,000) | $ 15,521,000 | $ (16,941,000) | $ (387,000)
Foreign currency translation adjustment reclassified to net income (loss) on sale of business | 0 | (14,000) | 0 | 52,074,000
Net unrealized gain (loss) on derivative instruments, designated as cash flow hedges | 478,000 | (2,887,000) | 1,103,000 | (5,228,000)
Net hedging (gain) loss reclassified to net income (loss) | 32,000 | 2,879,000 | 1,200,000 | 2,588,000
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment and Tax | 0 | (893,000) | 0 | (812,000)
Net defined benefit plan (gain) loss reclassified to net income (loss) | 698,000 | 499,000 | 2,121,000 | 1,439,000
Total other comprehensive income (loss), before tax | (6,619,000) | 15,105,000 | (12,517,000) | 49,674,000
Tax (provision) benefit [Abstract] |  |  |  |
Foreign currency translation adjustment | 63,000 | (1,533,000) | (177,000) | 240,000
Foreign currency translation adjustment reclassified to net income (loss) on sale of business | 0 | 0 | 0 | 0
Net unrealized gain (loss) on derivative instruments, designated as cash flow hedges | 0 | 74,000 | (18,000) | 501,000
Net hedging (gain) loss reclassified to net income (loss) | 0 | (67,000) | (467,000) | (18,000)
Net unrealized gain (loss) on defined benefit plans | 0 | (341,000) | 0 | (339,000)
Net defined benefit plan (gain) loss reclassified to net income (loss) | (11,000) | 576,000 | (34,000) | 601,000
Total other comprehensive income (loss) tax (provision) benefit | 52,000 | (1,291,000) | (696,000) | 985,000
Net-of-tax amount [Abstract] |  |  |  |
Foreign currency translation adjustment | (7,764,000) | 13,988,000 | (17,118,000) | (147,000)
Foreign currency translation adjustment reclassified to net income (loss) on sale of business | 0 | (14,000) | 0 | 52,074,000
Net unrealized gain (loss) on derivative instruments, designated as cash flow hedges | 478,000 | (2,813,000) | 1,085,000 | (4,727,000)
Net hedging (gain) loss reclassified to net income (loss) | 32,000 | 2,812,000 | 733,000 | 2,570,000
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, after Tax | 0 | (1,234,000) | 0 | (1,151,000)
Net defined benefit plan (gain) loss reclassified to net income (loss) | 687,000 | 1,075,000 | 2,087,000 | 2,040,000
Total other comprehensive income (loss), net of tax | $ (6,567,000) | $ 13,814,000 | $ (13,213,000) | $ 50,659,000

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