Accumulated Other Comprehensive Income (Loss) (Changes in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019		Dec. 31, 2018		Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	[1]	$ (6,387)		$ (2,700)		$ (12,468)
Other comprehensive income (loss) before reclassifications	[1]	(12,734)		(3,173)		10,115
Amounts reclassified from accumulated other comprehensive income (loss)	[1]	11,890		(514)		(347)
Other comprehensive income (loss)	[1]	(844)		(3,687)		9,768
Ending balance	[1]	(7,231)		(6,387)		(2,700)
Losses on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance		(126)	[1]	0
Other comprehensive income (loss) before reclassifications		(10,224)		(284)
Amounts reclassified from accumulated other comprehensive income (loss)		907		158
Other comprehensive income (loss)	[1]	(9,317)		(126)
Ending balance		(9,443)	[1]	(126)	[1]	0
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance		(11,550)	[1]	(7,716)	[1]	(11,002)
Other comprehensive income (loss) before reclassifications		949		(3,834)		3,286
Amounts reclassified from accumulated other comprehensive income (loss)		11,666		0		0
Other comprehensive income (loss)	[1]	12,615		(3,834)		3,286
Ending balance	[1]	1,065		(11,550)		(7,716)
Investment in Convertible Preferred Securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance		258	[1]	344	[1]	0
Other comprehensive income (loss) before reclassifications		0		(86)		344
Amounts reclassified from accumulated other comprehensive income (loss)		0		0		0
Other comprehensive income (loss)	[1]	0		(86)		344
Ending balance	[1]	258		258		344
Defined Benefit Plan Items
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance		5,031	[1]	4,672	[1]	(1,466)
Other comprehensive income (loss) before reclassifications		(3,459)		1,031		6,485
Amounts reclassified from accumulated other comprehensive income (loss)		(683)		(672)		(347)
Other comprehensive income (loss)	[1]	(4,142)		359		6,138
Ending balance	[1]	$ 889		$ 5,031		$ 4,672

[1] All amounts are net of tax. Amounts in parentheses indicate debit