Income Taxes (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Tax Examination [Line Items]
Deferred tax assets included in prepaid expenses and other current assets	$ 29,129,000	$ 31,426,000
Undistributed foreign earnings	544,000,000
Net operating loss carryforwards	258,808,000	275,124,000
Alternative minimum taxes	9,679,000	9,679,000
Expected recognized tax benefit to be realized upon ultimate settlement	greater than fifty percent
Unrecognized tax benefits that would affect the effective tax rate in future periods	40,000,000
Deferred income tax accrued interest and penalties	4,000,000	5,000,000
Income tax related to interest and penalties	(1,000,000)	(1,000,000)	(2,000,000)
Decrease in unrecognized tax benefits related to federal, state and foreign tax positions	2,000,000
Total Assets of Variable Interest Entities	26,000,000	142,000,000
Total Liabilities of Variable Interest Entities	26,000,000	142,000,000
Domestic Country [Member]
Income Tax Examination [Line Items]
Net operating loss carryforwards	178,000,000
Foreign Country [Member]
Income Tax Examination [Line Items]
Net operating loss carryforwards	34,000,000
State and Local Jurisdiction [Member]
Income Tax Examination [Line Items]
Net operating loss carryforwards	$ 47,000,000