Income Taxes Income Tax Expense (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Income (Loss) from Continuing Operations before Income Taxes, Domestic									$ 93,000	$ 3,900	$ (29,500)
Income (Loss) from Continuing Operations before Income Taxes, Foreign									6,000	3,100	(2,000)
Income Taxes Receivable	$ 6,200								6,200
Current Federal Tax Expense (Benefit)									(1,883)	421	1,268
Current State and Local Tax Expense (Benefit)									(2,148)	2,034	1,972
Current Foreign Tax Expense (Benefit)									785	428	262
Current Income Tax Expense (Benefit)									(3,246)	2,883	3,502
Deferred Federal Income Tax Expense (Benefit)									12,018	44,071	(22,834)
Deferred State and Local Income Tax Expense (Benefit)									6,956	(2,938)	(1,900)
Deferred Foreign Income Tax Expense (Benefit)									(9)	37	2,140
Deferred Income Tax Expense (Benefit)									18,965	41,170	(22,594)
Total Tax expense/(benefit)	$ (280)	$ 5,083	$ 3,993	$ 6,923	$ 40,646	$ 2,281	$ (785)	$ 1,911	$ 15,719	$ 44,053	$ (19,092)