Summary of Significant Accounting Policies (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Concentration of Credit Risk
Due from West Virginia Lottery for gaming revenue settlements and capital reinvestment projects	$ 5,100,000	$ 10,900,000
Receivables	53,720,000	55,455,000
Racing settlements due from simulcasting at Hollywood Casino at Penn National Race Course	4,000,000	3,600,000
Casino Rama
Concentration of Credit Risk
Reimbursement of expenses paid on behalf of the company's joint venture	11,800,000	11,200,000
Kansas
Concentration of Credit Risk
Reimbursement of expenses paid on behalf of the company's joint venture	3,800,000	1,100,000
Receivables | Approved casino customers
Concentration of Credit Risk
Markers issued to customers	$ 6,700,000	$ 7,600,000