Summary of Significant Accounting Policies (Details) (USD $)	12 Months Ended
Dec. 31, 2011	Dec. 31, 2010
Concentration of Credit Risk
Due from West Virginia Lottery for gaming revenue settlements and capital reinvestment projects	$ 10,900,000	$ 8,100,000
Receivables	55,455,000	44,463,000
Reimbursement of expenses paid on behalf of Casino Rama	11,200,000	11,100,000
Racing settlements due from simulcasting at Hollywood Casino at Penn National Race Course	3,600,000	4,100,000
Receivables \| Approved casino customers
Concentration of Credit Risk
Markers issued to customers	$ 7,600,000	$ 4,800,000

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 3

-Subparagraph a(1)

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 4

-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.3-4)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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