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Asset Acquisitions (Narrative) (Details) (USD $) | 12 Months Ended |  |  | 0 Months Ended | 12 Months Ended | 1 Months Ended | 12 Months Ended |  | 3 Months Ended | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009 | Dec. 31, 2012 Minimum | Dec. 31, 2012 Maximum | Nov. 20, 2012 Peninsula Gaming state property | Oct. 04, 2011 IP Casino Resort Spa | Dec. 31, 2012 IP Casino Resort Spa | Dec. 31, 2011 IP Casino Resort Spa | Sep. 30, 2011 Development Agreement | Dec. 31, 2012 Earnout on Excess of EBITDA in 2015 Kansas Star | Dec. 31, 2012 Peninsula Gaming | Dec. 31, 2011 Peninsula Gaming | Dec. 31, 2010 Peninsula Gaming | Nov. 20, 2012 Peninsula Gaming | Dec. 31, 2012 Other Operating Items, Net Peninsula Gaming | Dec. 31, 2012 Other Operating Items, Net IP Casino Resort Spa
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of common stock acquired |  |  |  |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |
Number of gaming entertainment properties acquired |  |  |  |  |  |  | 5 |  |  |  |  |  |  |  |  |  |  |
Number of states represented by acquired properties |  |  |  |  |  |  | 3 |  |  |  |  |  |  |  |  |  |  |
Purchase price |  |  |  |  |  |  | $ 1,477,137,000 | $ 280,629,000 |  | $ 280,629,000 | $ 24,500,000 |  |  |  |  |  |  |
Earnout threshhold, EBITDA of certain properties |  |  |  |  |  |  |  |  |  |  |  | 105,000,000 |  |  |  |  |  |
Earnout multiple |  |  |  |  |  |  |  |  |  |  |  | 7.5 |  |  |  |  |  |
Contingent consideration - Kansas Star earn out |  |  |  |  |  |  | 9,800,000 |  |  |  |  |  |  |  |  |  |  |
Acquired accounts receivable, net |  |  |  |  |  |  |  | 1,230,000 |  |  |  |  |  |  |  |  |  |
Acquired accounts receivable, gross |  |  |  |  |  |  |  | 3,300,000 |  |  |  |  |  |  |  |  |  |
Acquired accounts receivable, reserve for estimated uncollectible amounts |  |  |  |  |  |  |  | 2,100,000 |  |  |  |  |  |  |  |  |  |
Goodwill, net | 694,929,000 | 213,576,000 | 213,576,000 | 213,576,000 |  |  | 481,353,000 |  |  |  |  |  | 481,353,000 |  |  | 481,300,000 |  |
Acquisition related costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 18,700,000 | 4,800,000
Other Income | (137,000) | 11,582,000 | 10,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Bargain purchase gain | 0 | 4,582,000 | 0 |  |  |  |  |  |  | 4,582,000 |  |  |  |  |  |  |  |
Capital improvements contingency |  |  |  |  |  |  |  | 44,000,000 | 44,000,000 |  |  |  |  |  |  |  |  |
Capital improvement project expenditures incurred in period | 108,643 | 84,563 | 48,783 |  |  |  |  |  | 28,000,000 |  |  |  | 7,606 | 0 | 0 |  |  |
Cumulative total project expenditures to date |  |  |  |  |  |  |  |  | 29,500,000 |  |  |  |  |  |  |  |  |
Other Acquisitions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Obligation to fund certain pre-development costs, annual amount |  |  |  |  | $ 1,000,000 | $ 2,000,000 |  |  |  |  |  |  |  |  |  |  |  |

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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=21917927&loc=d3e1043-128460 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 59 -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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- Definition In a business combination in which the amount of net identifiable assets acquired and liabilities assumed exceeds the aggregate consideration transferred or to be transferred (as defined), this element represents the amount of gain recognized by the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 36, 37, 38 -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 Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6571-128477 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6527-128477 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (f)(1) -URI http://asc.fasb.org/extlink&oid=7488404&loc=d3e6927-128479 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 68 -Subparagraph o(1) -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 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6393-128476 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6396-128476 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6387-128476 + Details
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- Definition Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph e -Clause 1 -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 Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 68 -Subparagraph l -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 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 34 -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 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 43 -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 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph e -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 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 72 -Subparagraph d -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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