Acquisitions And New Ventures Acquisitions And New Ventures - Identifiable Assets Acquired and Liabilities Assumed (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013 Oxford Acquisition [Member]	Jul. 17, 2013 Oxford Acquisition [Member]	Oct. 23, 2012 Riverwalk Acquisition [Member]	Jul. 17, 2013 Contractual Rights [Member] Oxford Acquisition [Member]	Oct. 23, 2012 Contractual Rights [Member] Riverwalk Acquisition [Member]	Jul. 17, 2013 Trade Names [Member] Oxford Acquisition [Member]	Oct. 23, 2012 Trade Names [Member] Riverwalk Acquisition [Member]	Jul. 17, 2013 Other Intangible Assets [Member] Oxford Acquisition [Member]	Jul. 17, 2013 Customer Relationships [Member] Oxford Acquisition [Member]	Oct. 23, 2012 Customer Relationships [Member] Riverwalk Acquisition [Member]
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Accounts receivable		$ 252	$ 228
Prepaid expenses		675	589
Inventory		124	99
Other assets			282
Property and equipment		45,105	64,908
Goodwill	50,200	50,202	32,768
Other intangible assets		64,693	43,100	58,500	25,300	2,400	7,500	2,093	1,700	10,300
Total assets acquired		161,051	141,974
Accounts payable		1,063	552
Accrued expenses		5,111	5,234
Other liabilities		5	1
Total liabilities acquired		6,179	5,787
Purchase price, net of cash acquired		$ 154,872	$ 136,187