Goodwill (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Racing Operations	Dec. 31, 2012 Racing Operations	Dec. 31, 2013 Gaming Operations	Dec. 31, 2012 Gaming Operations	Dec. 31, 2013 Online Operations	Dec. 31, 2012 Online Operations	Dec. 31, 2013 Other Investments	Dec. 31, 2012 Other Investments	Dec. 31, 2013 Oxford Acquisition [Member]	Jul. 17, 2013 Oxford Acquisition [Member]	Dec. 31, 2012 Riverwalk Acquisition [Member]	Oct. 23, 2012 Riverwalk Acquisition [Member]	Oct. 23, 2012 Riverwalk Acquisition [Member] Gaming Operations	Dec. 31, 2012 Bluff
Goodwill [Line Items]
Goodwill											$ 50,200	$ 50,202		$ 32,768
Goodwill [Roll Forward]
Balance, beginning of period	250,414	213,712	51,659	50,400	67,457	34,689	127,364	127,364	3,934	1,259			32,800		32,800	3,900
Reclassifications		0		1,259						(1,259)
Additions	50,202	36,702	0	0	50,202	32,768	0	0	0	3,934
Balance, end of period	$ 300,616	$ 250,414	$ 51,659	$ 51,659	$ 117,659	$ 67,457	$ 127,364	$ 127,364	$ 3,934	$ 3,934			$ 32,800		$ 32,800	$ 3,900