Fair Value of Financial Instruments (Recurring/Nonrecurring) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014	Mar. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Property and equipment, net	$ 350,969		$ 350,969		$ 368,614
Goodwill, net	1,769,718		1,769,718		1,780,758
Equity Method Investments	103,549		103,549		103,598
Fair Value, Nonrecurring Basis, Asset, Gain (Loss) Included in Earnings		$ 4,434		$ 4,582
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Property and equipment, net	0		0			$ 0
Goodwill, net					0
Equity Method Investments						0
Assets, Fair Value Disclosure						0
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Property and equipment, net	0		0			0
Goodwill, net					0
Equity Method Investments						0
Assets, Fair Value Disclosure						0
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Property and equipment, net	0		0			0
Goodwill, net					$ 0
Equity Method Investments						0
Assets, Fair Value Disclosure						$ 0
Equity Method Investments [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Nonrecurring Basis, Asset, Gain (Loss) Included in Earnings		360		360
Property and equipment [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Nonrecurring Basis, Asset, Gain (Loss) Included in Earnings	$ 0	174	$ 58	322
Goodwill [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Nonrecurring Basis, Asset, Gain (Loss) Included in Earnings		$ 3,900		$ 3,900