Income Taxes (Details) (USD $)	3 Months Ended		9 Months Ended		36 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Income Tax Contingency [Line Items]
Income tax expense	$ 2,932,000	$ 2,203,000	$ 6,021,000	$ 16,715,000
Valuation allowance	17,900,000		17,900,000
Cumulative Loss from Continuing Operations					217,000,000
Effective income rax rate	42.00%	33.00%	41.00%	39.00%
Statutory income tax rate			35.00%
Loss Asset Impairment		317,100,000			324,000,000
Tax benefit from loss on impairment		1,800,000
Section 382 annual base limitation	7,400,000		7,400,000
Net operating loss carryforward	144,900,000		144,900,000
U.S. [Member]
Income Tax Contingency [Line Items]
Net operating loss carryforward	$ 47,000,000		$ 47,000,000