Income Taxes Income Tax by Jurisdiction (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest
Income (Loss) from Continuing Operations before Income Taxes, Domestic	$ 52,190	$ 64,670	$ 46,180
Income (Loss) from Continuing Operations before Income Taxes, Foreign	26,070	27,690	23,700
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	78,260	92,360	69,880
Current Federal Tax Expense (Benefit)	3,530	4,410	10,990
Current State and Local Tax Expense (Benefit)	1,280	2,060	1,640
Current Foreign Tax Expense (Benefit)	7,070	6,200	6,010
Current Income Tax Expense (Benefit)	11,880	12,670	18,640
Deferred Federal Income Tax Expense (Benefit)	4,890	4,570	15,200
Deferred State and Local Income Tax Expense (Benefit)	500	1,310	1,280
Deferred Foreign Income Tax Expense (Benefit)	(950)	100	(1,200)
Deferred Income Tax Expense (Benefit)	4,440	5,980	15,280
Income Tax Expense (Benefit), Continuing Operations	$ 16,320	$ 18,650	$ 33,920