Acquisitions - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Jun. 30, 2015	May. 29, 2015	Dec. 31, 2014
Allocation of purchase price to the estimated fair values of the assets acquired and liabilities assumed
Goodwill	$ 261,202		$ 77,617
Cadillac Jack [Member]
Allocation of purchase price to the estimated fair values of the assets acquired and liabilities assumed
Business Combination, Current Assets		$ 38,162
Property and equipment		29,817
Goodwill		179,436
Intangible assets		199,752
Other long-term assets		38,690
Total assets		485,857
Current liabilities		8,636
Business Combination, Deferred Tax Liabilities Noncurrent		41,001
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other		54,560
Total equity purchase price		$ 381,660