Income Taxes (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Tax Credit Carryforward [Line Items]
Current Federal Tax Expense (Benefit)	$ (3,244,000)	$ (4,749,000)	$ 8,310,000
Income Tax Examination, Foreign Income Tax Expense (Benefit)	(4,947,000)
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	20,000	1,150,000	490,000
Income Tax Examination, Foreign Income Tax Expense (Benefit), Per Share	$ 0.15
Deferred Tax Assets, Gross	104,493,000	108,850,000
Deferred Tax Liabilities	39,278,000	53,650,000
Deferred Tax Assets, Valuation Allowance	92,543,000	81,981,000
Deferred Tax Assets (Liabilities), Net	27,328,000	26,781,000
Income Taxes Paid, Net	14,290,000	2,600,000	12,340,000
Unrecognized Tax Benefits, Excluding Interest and Penalties	3,525,000	3,420,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	720,000	740,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	3,525,000	3,420,000
Worker, Homeownership and Business Assistance Act [Member]
Tax Credit Carryforward [Line Items]
Current Federal Tax Expense (Benefit)			7,750,000
Internal Revenue Service (IRS) [Member]
Tax Credit Carryforward [Line Items]
Deferred Tax Liabilities, Current	4,750,000	1,800,000
Deferred Tax Assets, Operating Loss Carryforwards	34,340,000
Foreign Country [Member]
Tax Credit Carryforward [Line Items]
Deferred Tax Assets, Valuation Allowance	30,305,000
Deferred Tax Assets, Operating Loss Carryforwards	39,102,000
Deferred Tax Assets, Operating Loss Carryforwards, Not Subject to Expiration	31,662,000
State and Local Jurisdiction [Member]
Tax Credit Carryforward [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards	370,000,000
Expiring in 2027 [Member] | Foreign Country [Member]
Tax Credit Carryforward [Line Items]
Deferred Tax Assets, Capital Loss Carryforwards	7,440,000
Expiring in 2012 [Member] | Domestic Country [Member]
Tax Credit Carryforward [Line Items]
Deferred Tax Assets, Capital Loss Carryforwards	3,798,000
Expiring between 2012 and 2015 [Member] | State and Local Jurisdiction [Member]
Tax Credit Carryforward [Line Items]
Deferred Tax Assets, Capital Loss Carryforwards	175,000,000
Expiring between 2016 and 2025 [Member] | State and Local Jurisdiction [Member]
Tax Credit Carryforward [Line Items]
Deferred Tax Assets, Capital Loss Carryforwards	92,000,000
Expiring after 2026 [Member] | State and Local Jurisdiction [Member]
Tax Credit Carryforward [Line Items]
Deferred Tax Assets, Capital Loss Carryforwards	103,000,000
Expiring between 2014 and 2018 [Member] | Internal Revenue Service (IRS) [Member]
Tax Credit Carryforward [Line Items]
Deferred Tax Assets, Capital Loss Carryforwards	12,953,000
Expiring between 2019 and 2021 [Member] | Internal Revenue Service (IRS) [Member]
Tax Credit Carryforward [Line Items]
Deferred Tax Assets, Capital Loss Carryforwards	$ 21,387,000