Income Taxes (Schedule of Deferred Tax Asset (Liability)) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Deferred tax asset, net	$ 15,668	$ 121,403
Deferred Tax Assets, Net, Noncurrent	(95,275)	(29,141)
Deferred Tax Assets, Net	(79,607)	92,262
Current [Member]
Deferred Tax Assets, Operating Loss Carryforwards	5,130	687
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits	13,299	10,230
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowance for Doubtful Accounts	316	392
Current Tax Liability and Defered Tax Asset For Estimated Taxes Payable on Litigation Settlement Proceeds	0	114,210
Deferred Tax Assets, Other	1,280	1
Deferred Tax Assets, Gross, Current	20,025	125,520
Deferred Tax Assets, Valuation Allowance, Current	2,623	4,117
Deferred Tax Assets, Net of Valuation Allowance, Current	17,402	121,403
Deferred Tax Liabilities, Other	1,734	0
Deferred Tax Liabilities, Net, Current	1,734	0
Deferred tax asset, net	15,668	121,403
Noncurrent [Member]
Deferred Tax Assets, Operating Loss Carryforwards	26,413	25,625
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits	18,713	13,768
Deferred tax asset, fixed assets and intangible assets	0	7,480
Deferred Tax Assets Interest Rate Swap Contracts Noncurrent	3,577	4,971
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Other	7,281	7,537
Deferred Tax Assets, Gross, Noncurrent	55,984	59,381
Deferred Tax Assets, Valuation Allowance, Noncurrent	7,335	1,947
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent	48,649	57,434
Deferred Tax Liabilities, Prepaid Expenses	825	668
Deferred tax liability, fixed assets and intangible assets	8,595	0
Deferred Tax Liabilities, Investment in Noncontrolled Affiliates	131,116	85,907
Deferred Tax Liabilities, Deferred Expense, Other Capitalized Costs	3,388	0
Deferred Tax Liabilities, Net, Noncurrent	143,924	86,575
Deferred Tax Assets, Net, Noncurrent	$ (95,275)	$ (29,141)