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Acquisitions And New Ventures Acquisitions And New Ventures (Details) (USD $) Share data in Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 1 Months Ended | 12 Months Ended |  |  |  | 3 Months Ended |  | 1 Months Ended | 3 Months Ended | 12 Months Ended |
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Mar. 31, 2013 | Mar. 31, 2012 | Mar. 31, 2012 Miami Valley Gaming and Racing [Member] | Dec. 31, 2012 Miami Valley Gaming and Racing [Member] sqft mi acre | Dec. 21, 2012 Notes Payable, Other Payables [Member] Miami Valley Gaming and Racing [Member] mi | Dec. 31, 2012 Minimum Miami Valley Gaming and Racing [Member] terminal | Dec. 31, 2012 Maximum Miami Valley Gaming and Racing [Member] terminal | Mar. 29, 2013 Oxford Acquisition [Member] | Mar. 31, 2012 Riverwalk Acquisition [Member] | Oct. 23, 2012 Riverwalk Acquisition [Member] acre sqft hotel_rooms | Mar. 31, 2012 Ohio Joint Venture [Member] | Mar. 31, 2013 Ohio Joint Venture [Member] | Dec. 31, 2012 Ohio Joint Venture [Member] | Dec. 31, 2012 License Fee Payable [Member] Miami Valley Gaming and Racing [Member]
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Race Track, Length |  |  |  | 0.625 |  |  |  |  |  |  |  |  |  |
Business Acquisition, Pro Forma Revenue |  |  |  |  |  |  |  |  | $ 152,905,000 |  |  |  |  |
Square Footage of Event Center |  |  |  |  |  |  |  |  |  | 5,600 |  |  |  |
Acres |  |  |  | 120 |  |  |  |  |  | 22 |  |  |  |
Purchase price of the entity to be acquired |  |  |  |  |  |  |  |  |  | 145,600,000 |  |  |  |
Business Acquisition, Contingent Consideration, Potential Cash Payment |  |  |  |  |  |  |  | 8,000,000 |  |  |  |  |  |
Square footage of Casino |  |  |  | 186,000 |  |  |  |  |  | 25,000 |  |  |  |
Number of Hotel rooms |  |  |  |  |  |  |  |  |  | 80 |  |  |  |
Ownership In Joint Venture |  |  |  |  |  |  |  |  |  |  | 50.00% |  |  |
Maximum Amount Of Contributions Needed To Fund Asset Purchase For Existing Racing Licenses And Racetrack Assets, License Fees and Acquisition Costs For Land |  |  |  | 80,000,000 |  |  |  |  |  |  |  |  |  |
FutureCapital ExpendituresOnDevelopingAndConstructingFacility |  |  |  |  |  |  |  |  |  |  |  |  | 132,000,000 |
Future Business Acquisition, Cost Of Acquired Entity, Purchase Price |  |  |  |  |  |  |  | 160,000,000 |  |  | 60,000,000 |  |  |
Future Business Acquisition, Cost of Acquired Entity, Cash That Will Be Paid |  |  |  |  |  |  |  |  |  |  | 10,000,000 |  |  |
Equity Method Investments |  |  |  |  | 50,000,000 |  |  |  |  |  |  |  |  |
Fair value of earn-out liability and accrued purchase price | 0 | (2,331,000) |  |  |  |  |  |  |  |  | 10,000,000 |  |  |
Distance to nearest gaming facility |  |  |  |  | 50 |  |  |  |  |  |  |  |  |
Contingent condiseration payment term |  |  | 5 years |  |  |  |  |  |  |  |  |  |  |
Number of Lottery Terminals |  |  |  |  |  | 1,600 | 1,800 |  |  |  |  |  |  |
Equity Method Investments, Facility Cost |  |  |  | 212,000,000 |  |  |  |  |  |  |  |  |  | 50,000,000
Payments to Acquire Interest in Joint Venture | 3,500,000 | 4,275,000 |  |  |  |  |  |  |  |  |  | 3,500,000 |  |
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations before Changes in Accounting and Extraordinary Items, Net of Tax |  |  |  |  |  |  |  |  | $ 6,445,000 |  |  |  |  |
Business Acquisition, Pro Forma Earnings Per Share, Basic |  |  |  |  |  |  |  |  | $ 0.23 |  |  |  |  |
Business Acquisition, Pro Forma Earnings Per Share, Diluted |  |  |  |  |  |  |  |  | $ 0.22 |  |  |  |  |
Weighted Average Basic Shares Outstanding, Pro Forma |  |  |  |  |  |  |  |  | 16,903 |  |  |  |  |
Pro Forma Weighted Average Shares Outstanding, Diluted |  |  |  |  |  |  |  |  | 17,433 |  |  |  |  |

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- Definition This element represents the acquisition-date fair value of the total consideration transferred which consists of the sum of the acquisition-date fair values of the assets transferred by the acquirer, the liabilities incurred by the acquirer to former owners of the acquiree, and the equity interests issued by the acquirer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 68 -Subparagraph f -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 39, 40 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7488404&loc=d3e6927-128479 + Details
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- Definition The cash outflow associated with the investment in or advances to an entity in which the reporting entity shares control of the entity with another party or group. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3213-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 17 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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