Equity and Noncontrolling Interest - Reclassifications (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Accumulated Other Comprehensive Income (Loss), Balance at Beginning of Period	$ (109,264)	$ (78,881)	$ (78,170)	$ (80,715)
Other Comprehensive Income (Loss) Before Reclassifications	33,970	(27,538)	(14,930)	(26,292)
Amounts Reclassified from AOCI	480	632	25,321	1,957
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent	34,450	(26,906)	10,391	(24,335)
Related Tax Amounts	(196)	(260)	(7,231)	(997)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	34,254	(27,166)	3,160	(25,332)
Accumulated Other Comprehensive Income (Loss), Balance at End of Period	(75,010)	(106,047)	(75,010)	(106,047)
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Balance at Beginning of Period	(88,637)	(50,296)	(44,568)	(49,322)
Other Comprehensive Income (Loss) Before Reclassifications	33,601	(28,211)	(10,468)	(29,185)
Amounts Reclassified from AOCI	0	0	0	0
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent	33,601	(28,211)	(10,468)	(29,185)
Related Tax Amounts	0	0	0	0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	33,601	(28,211)	(10,468)	(29,185)
Accumulated Other Comprehensive Income (Loss), Balance at End of Period	(55,036)	(78,507)	(55,036)	(78,507)
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Balance at Beginning of Period	(17,363)	(29,323)	(34,533)	(30,551)
Other Comprehensive Income (Loss) Before Reclassifications	(901)	679	(409)	760
Amounts Reclassified from AOCI	584	728	25,550	2,192
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent	(317)	1,407	25,141	2,952
Related Tax Amounts	60	(281)	(8,228)	(598)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(257)	1,126	16,913	2,354
Accumulated Other Comprehensive Income (Loss), Balance at End of Period	(17,620)	(28,197)	(17,620)	(28,197)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss), Balance at Beginning of Period	(4,412)	0	(320)	0
Other Comprehensive Income (Loss) Before Reclassifications	460	0	(4,855)	0
Amounts Reclassified from AOCI	0	0	0	0
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent	460	0	(4,855)	0
Related Tax Amounts	(106)	0	1,117	0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	354	0	(3,738)	0
Accumulated Other Comprehensive Income (Loss), Balance at End of Period	(4,058)	0	(4,058)	0
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Accumulated Other Comprehensive Income (Loss), Balance at Beginning of Period	1,148	738	1,251	(842)
Other Comprehensive Income (Loss) Before Reclassifications	810	(6)	802	2,133
Amounts Reclassified from AOCI	(104)	(96)	(229)	(235)
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent	706	(102)	573	1,898
Related Tax Amounts	(150)	21	(120)	(399)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	556	(81)	453	1,499
Accumulated Other Comprehensive Income (Loss), Balance at End of Period	$ 1,704	$ 657	$ 1,704	$ 657