Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Receivables, allowance for doubtful accounts (in dollars)	$ 3,118	$ 3,180
Loans to the Jamul Tribe, reserves	$ 5,635	$ 0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	93,507,060	93,289,701
Common stock, shares outstanding	91,339,667	91,122,308
Treasury stock, shares held	2,167,393	2,167,393
Series B Preferred Stock
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Series C Preferred Stock
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	18,500	18,500
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0