v2.4.0.8
Acquisitions and Divestitures (Acquisitions) (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Business Acquisition [Line Items]        
Net revenues $ 738,569 $ 612,390 $ 2,212,901 $ 1,858,129
Net income (loss) attributable to Boyd Gaming Corporation (37,267) (15,796) (32,924) (8,967)
Basic and diluted loss per share (in USD per share)   $ (0.18)   $ (0.10)
Pro forma basic and diluted loss per share (in USD per share)       $ (0.03)
Pro Forma, Peninsula Gaming
       
Business Acquisition [Line Items]        
Pro forma net revenues   130,154   397,769
Pro forma net income (loss) attributable to Boyd Gaming Corporation   1,833   5,987
Pro Forma
       
Business Acquisition [Line Items]        
Pro forma net revenues   742,544   2,255,898
Pro forma net income (loss) attributable to Boyd Gaming Corporation   $ (13,963)   $ (2,980)
Pro forma basic and diluted loss per share (in USD per share)   $ (0.16)