Income Taxes (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2016
Income Tax Examination [Line Items]
Undistributed foreign earnings	$ 712,000
Net operating loss carryforwards	429,458	$ 377,740
Alternative minimum taxes	10,727	10,727
Unrecognized tax benefits that would affect the effective tax rate in future periods	47,000
Deferred income tax accrued interest and penalties		4,000
Income tax related to interest and penalties	(1,000)	(1,000)	$ (1,000)
Total assets of variable interest entities	237,000	237,000
Total liabilities of variable interest entities	205,000	$ 205,000
Domestic Country
Income Tax Examination [Line Items]
Net operating loss carryforwards	386,000
Other Jurisdictions
Income Tax Examination [Line Items]
Net operating loss carryforwards	29,000
Foreign Country
Income Tax Examination [Line Items]
Net operating loss carryforwards	$ 14,000
Scenario, Forecast
Income Tax Examination [Line Items]
Decrease in unrecognized tax benefits related to federal, state and foreign tax positions				$ 3,000