Income Taxes Income Tax Expense Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate	35.00%	35.00%	35.00%
Income Tax Reconciliation, Income Tax Expense (Benefit), at Federal Statutory Income Tax Rate	$ (7,740)	$ 24,360	$ 26,650
Income Tax Reconciliation, State and Local Income Taxes	(520)	2,520	280
Income Tax Reconciliation, Foreign Income Tax Rate Differential	110	(200)	(4,330)
Income Tax Reconciliation, Tax Contingencies	(460)	(2,490)	(1,900)
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Impairment Losses, Amount	11,430	0	0
Effective Income Tax Rate Reconciliation, Tax Exempt Income, Amount	(980)	0	(5,460)
Income Tax Reconciliation, Nondeductible Expense, Restructuring Charges (Benefits)	0	0	2,230
Income Tax Reconciliation, Noncontrolling Interest Income (Expense)	0	(280)	(1,410)
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount	(1,680)	(1,920)	(1,680)
Income Tax Reconciliation, Tax on Undistributed Foreign Earnings	610	50	290
Income Tax Reconciliation, Change in Deferred Tax Assets Valuation Allowance	3,770	3,270	820
Income Tax Reconciliation, Other Adjustments	2,000	(2,600)	1,420
Income Tax Expense (Benefit), Continuing Operations	$ 6,540	$ 22,710	$ 16,910