Equity and Noncontrolling Interest - AOCI Reclassifications (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance	$ (53,228)	$ (121,524)	$ (26,598)	$ (78,170)
Other Comprehensive (Loss) Income, before Reclassifications, before Tax	16,824	12,198	(7,869)	(48,900)
Amounts Reclassed from AOCI	854	507	(1,369)	24,841
Related Tax Amounts	(393)	(445)	(107)	(7,035)
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance	(35,943)	(109,264)	(35,943)	(109,264)
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance	(28,334)	(99,187)	(2,875)	(44,568)
Other Comprehensive (Loss) Income, before Reclassifications, before Tax	16,157	10,550	(9,302)	(44,069)
Amounts Reclassed from AOCI	0	0	0	0
Related Tax Amounts	0	0	0	0
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance	(12,177)	(88,637)	(12,177)	(88,637)
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance	(22,175)	(17,576)	(23,467)	(34,533)
Other Comprehensive (Loss) Income, before Reclassifications, before Tax	(260)	(336)	521	492
Amounts Reclassed from AOCI	852	600	1,714	24,966
Related Tax Amounts	(195)	(51)	(546)	(8,288)
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance	(21,778)	(17,363)	(21,778)	(17,363)
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance	317	(460)	3,342	1,251
Other Comprehensive (Loss) Income, before Reclassifications, before Tax	341	2,128	(404)	(8)
Amounts Reclassed from AOCI	2	(93)	(3,083)	(125)
Related Tax Amounts	(64)	(427)	741	30
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance	596	1,148	596	1,148
Derivative Instruments
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance	(3,036)	(4,301)	(3,598)	(320)
Other Comprehensive (Loss) Income, before Reclassifications, before Tax	586	(144)	1,316	(5,315)
Amounts Reclassed from AOCI	0	0	0	0
Related Tax Amounts	(134)	33	(302)	1,223
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance	$ (2,584)	$ (4,412)	$ (2,584)	$ (4,412)