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Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands |  |  |  | 1 Months Ended | 3 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 01, 2015 | Nov. 01, 2013 | Oct. 01, 2013 | Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2015 | Sep. 01, 2015 | Dec. 31, 2014
Reconciliation of goodwill and accumulated goodwill impairment losses |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  | $ 2,175,507 | $ 2,137,749 | $ 2,134,697 | $ 2,175,507 |  | $ 2,137,749
Accumulated goodwill impairment losses |  |  |  |  |  |  | (1,263,565) | (1,263,565) | (1,182,744) | (1,263,565) |  | (1,263,565)
Goodwill, net |  |  |  |  |  |  | 911,942 | 874,184 | 951,953 | 911,942 |  | 874,184
Goodwill acquired |  |  |  |  |  |  |  | 37,758 | 3,052 |  |  |
Goodwill impairment losses |  |  | $ (249,300) |  |  |  |  |  | (80,821) |  |  |
Balance at the end of the period, Goodwill gross |  |  |  |  |  |  | 2,175,507 | 2,137,749 | 2,134,697 |  |  |
Balance at the end of the period, Accumulated goodwill impairment losses |  |  |  |  |  |  | (1,263,565) | (1,263,565) | (1,182,744) |  |  |
Goodwill, Ending Balance |  |  |  |  |  |  | 911,942 | 874,184 | 951,953 |  |  |
Intangible assets |  |  |  |  |  |  |  |  |  |  |  |
Finite-lived intangible assets, Accumulated Amortization |  |  |  |  |  |  |  |  |  | 77,135 |  | 76,613
Finite-lived intangible assets, Net Book Value |  |  |  |  |  |  |  |  |  | 16,037 |  |
Intangible assets, Gross Carrying Value |  |  |  |  |  |  |  |  |  | 468,577 |  | 496,066
Intangible Assets, Net (Excluding Goodwill), Total |  |  |  |  |  |  |  |  |  | 391,442 |  | 419,453
Other intangible assets |  |  |  |  |  |  |  |  |  | 391,442 |  | 419,453
Indefinite-Lived Intangible Assets (Excluding Goodwill), Total |  |  |  |  |  |  |  |  |  | 375,405 |  | 418,991
Intangible asset amortization expense |  |  |  |  |  |  | 500 | 11,400 | 16,100 |  |  |
Goodwill impairment losses |  |  | 249,300 |  |  |  |  |  | 80,821 |  |  |
Impairment of intangible asset |  |  | $ 311,000 |  |  | $ 4,600 | 40,000 | 74,500 |  |  |  |
Expected future amortization expense |  |  |  |  |  |  |  |  |  |  |  |
2016 |  |  |  |  |  |  |  |  |  | 1,755 |  |
2017 |  |  |  |  |  |  |  |  |  | 1,685 |  |
2018 |  |  |  |  |  |  |  |  |  | 1,673 |  |
2019 |  |  |  |  |  |  |  |  |  | 1,673 |  |
2020 |  |  |  |  |  |  |  |  |  | 1,673 |  |
Thereafter |  |  |  |  |  |  |  |  |  | 7,578 |  |
Finite-lived intangible assets, Net Book Value |  |  |  |  |  |  |  |  |  | 16,037 |  |
Goodwill |  |  |  |  |  |  | $ 911,942 | 874,184 | 951,953 | 911,942 |  | 874,184
Other intangible assets |  |  |  |  |  |  |  |  |  | 391,442 |  | 419,453
Spinoff |  |  |  |  |  |  |  |  |  |  |  |
Reconciliation of goodwill and accumulated goodwill impairment losses |  |  |  |  |  |  |  |  |  |  |  |
Goodwill impairment losses |  | $ (30,900) |  |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  |  |  |  |  |  |  |  |  |
Goodwill impairment losses |  | 30,900 |  |  |  |  |  |  |  |  |  |
Impairment of intangible asset |  | $ 133,100 |  |  |  |  |  |  |  |  |  |
Prairie State Gaming |  |  |  |  |  |  |  |  |  |  |  |
Reconciliation of goodwill and accumulated goodwill impairment losses |  |  |  |  |  |  |  |  |  |  |  |
Goodwill, net | $ 22,900 |  |  |  |  |  |  |  |  |  | $ 22,900 |
Goodwill, Ending Balance | 22,900 |  |  |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  |  |  |  |  |  |  |  |  |
Intangible Assets, Net (Excluding Goodwill), Total |  |  |  |  |  |  |  |  |  |  | 15,700 |
Other intangible assets |  |  |  |  |  |  |  |  |  |  | 15,700 |
Expected future amortization expense |  |  |  |  |  |  |  |  |  |  |  |
Goodwill | $ 22,900 |  |  |  |  |  |  |  |  |  | 22,900 |
Other intangible assets |  |  |  |  |  |  |  |  |  |  | 15,700 |
Hollywood Gaming at Dayton Raceway And Mahoning Valley Race Course |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  |  |  |  |  |  |  |  |  |
Fair value discount rate |  |  |  |  |  |  | 5.00% |  |  |  |  |
Hollywood Gaming at Dayton Raceway And Mahoning Valley Race Course | Indefinite-lived Intangible Assets |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  |  |  |  |  |  |  |  |  |
Fair value discount rate |  |  |  |  | 5.00% |  |  |  |  |  |  |
Hollywood Gaming at Dayton Raceway |  |  |  |  |  |  |  |  |  |  |  |
Reconciliation of goodwill and accumulated goodwill impairment losses |  |  |  |  |  |  |  |  |  |  |  |
Goodwill, net |  |  |  |  |  |  | $ 15,339 |  |  | 15,339 |  |
Goodwill, Ending Balance |  |  |  |  |  |  | 15,339 |  |  |  |  |
Intangible assets |  |  |  |  |  |  |  |  |  |  |  |
Intangible Assets, Net (Excluding Goodwill), Total |  |  |  |  |  |  |  |  |  | 110,436 |  |
Other intangible assets |  |  |  |  |  |  |  |  |  | 110,436 |  |
Indefinite-Lived Intangible Assets (Excluding Goodwill), Total |  |  |  |  | $ 75,000 |  |  |  |  |  |  |
Payments for gaming license fee |  |  |  |  |  |  | 50,000 |  |  |  |  |
Gaming license fee |  |  |  |  |  |  | 25,000 | 25,000 |  |  |  |
Expected future amortization expense |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  | 15,339 |  |  | 15,339 |  |
Other intangible assets |  |  |  |  |  |  |  |  |  | 110,436 |  |
Mahoning Valley Race Course |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  |  |  |  |  |  |  |  |  |
Intangible Assets, Net (Excluding Goodwill), Total |  |  |  |  |  |  |  |  |  | 125,000 |  |
Other intangible assets |  |  |  |  |  |  |  |  |  | 125,000 |  |
Indefinite-Lived Intangible Assets (Excluding Goodwill), Total |  |  |  |  | $ 75,000 |  |  |  |  |  |  |
Payments for gaming license fee |  |  |  |  |  |  | 50,000 |  |  |  |  |
Gaming license fee |  |  |  |  |  |  | 25,000 | $ 25,000 |  |  |  |
Expected future amortization expense |  |  |  |  |  |  |  |  |  |  |  |
Other intangible assets |  |  |  |  |  |  |  |  |  | 125,000 |  |
Hollywood Casino St Louis |  |  |  |  |  |  |  |  |  |  |  |
Reconciliation of goodwill and accumulated goodwill impairment losses |  |  |  |  |  |  |  |  |  |  |  |
Goodwill, net |  |  |  |  |  |  | 205,783 |  |  | 205,783 |  |
Goodwill, Ending Balance |  |  |  |  |  |  | 205,783 |  |  |  |  |
Intangible assets |  |  |  |  |  |  |  |  |  |  |  |
Intangible Assets, Net (Excluding Goodwill), Total |  |  |  |  |  |  |  |  |  | 58,418 |  |
Other intangible assets |  |  |  |  |  |  |  |  |  | 58,418 |  |
Expected future amortization expense |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  | 205,783 |  |  | 205,783 |  |
Other intangible assets |  |  |  |  |  |  |  |  |  | 58,418 |  |
Prairie State Gaming |  |  |  |  |  |  |  |  |  |  |  |
Reconciliation of goodwill and accumulated goodwill impairment losses |  |  |  |  |  |  |  |  |  |  |  |
Goodwill, net |  |  |  |  |  |  | 22,937 |  |  | 22,937 |  |
Goodwill, Ending Balance |  |  |  |  |  |  | 22,937 |  |  |  |  |
Intangible assets |  |  |  |  |  |  |  |  |  |  |  |
Intangible Assets, Net (Excluding Goodwill), Total |  |  |  |  |  |  |  |  |  | 15,151 |  |
Other intangible assets |  |  |  |  |  |  |  |  |  | 15,151 |  |
Expected future amortization expense |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  | 22,937 |  |  | 22,937 |  |
Other intangible assets |  |  |  |  |  |  |  |  |  | 15,151 |  |
Argosy Casino Riverside |  |  |  |  |  |  |  |  |  |  |  |
Reconciliation of goodwill and accumulated goodwill impairment losses |  |  |  |  |  |  |  |  |  |  |  |
Goodwill, net |  |  |  |  |  |  | 154,332 |  |  | 154,332 |  |
Goodwill, Ending Balance |  |  |  |  |  |  | 154,332 |  |  |  |  |
Intangible assets |  |  |  |  |  |  |  |  |  |  |  |
Intangible Assets, Net (Excluding Goodwill), Total |  |  |  |  |  |  |  |  |  | 4,964 |  |
Other intangible assets |  |  |  |  |  |  |  |  |  | 4,964 |  |
Expected future amortization expense |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  | 154,332 |  |  | 154,332 |  |
Other intangible assets |  |  |  |  |  |  |  |  |  | 4,964 |  |
Zia Park Casino |  |  |  |  |  |  |  |  |  |  |  |
Reconciliation of goodwill and accumulated goodwill impairment losses |  |  |  |  |  |  |  |  |  |  |  |
Goodwill, net |  |  |  |  |  |  | 142,359 |  |  | 142,359 |  |
Goodwill, Ending Balance |  |  |  |  |  |  | 142,359 |  |  |  |  |
Expected future amortization expense |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  | 142,359 |  |  | 142,359 |  |
Hollywood Casino at Penn National Race Course |  |  |  |  |  |  |  |  |  |  |  |
Reconciliation of goodwill and accumulated goodwill impairment losses |  |  |  |  |  |  |  |  |  |  |  |
Goodwill, net |  |  |  |  |  |  | 1,497 |  |  | 1,497 |  |
Goodwill, Ending Balance |  |  |  |  |  |  | 1,497 |  |  |  |  |
Intangible assets |  |  |  |  |  |  |  |  |  |  |  |
Intangible Assets, Net (Excluding Goodwill), Total |  |  |  |  |  |  |  |  |  | 67,607 |  |
Other intangible assets |  |  |  |  |  |  |  |  |  | 67,607 |  |
Expected future amortization expense |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  | 1,497 |  |  | 1,497 |  |
Other intangible assets |  |  |  |  |  |  |  |  |  | 67,607 |  |
Hollywood Casino Lawrenceburg |  |  |  |  |  |  |  |  |  |  |  |
Reconciliation of goodwill and accumulated goodwill impairment losses |  |  |  |  |  |  |  |  |  |  |  |
Goodwill, net |  |  |  |  |  |  | 63,189 |  |  | 63,189 |  |
Goodwill, Ending Balance |  |  |  |  |  |  | 63,189 |  |  |  |  |
Expected future amortization expense |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  | 63,189 |  |  | 63,189 |  |
Hollywood Casino Aurora |  |  |  |  |  |  |  |  |  |  |  |
Reconciliation of goodwill and accumulated goodwill impairment losses |  |  |  |  |  |  |  |  |  |  |  |
Goodwill, net |  |  |  |  |  |  | 207,207 |  |  | 207,207 |  |
Goodwill, Ending Balance |  |  |  |  |  |  | 207,207 |  |  |  |  |
Expected future amortization expense |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  | 207,207 |  |  | 207,207 |  |
Argosy Casino Alton |  |  |  |  |  |  |  |  |  |  |  |
Reconciliation of goodwill and accumulated goodwill impairment losses |  |  |  |  |  |  |  |  |  |  |  |
Goodwill, net |  |  |  |  |  |  | 9,863 |  |  | 9,863 |  |
Goodwill, Ending Balance |  |  |  |  |  |  | 9,863 |  |  |  |  |
Intangible assets |  |  |  |  |  |  |  |  |  |  |  |
Intangible Assets, Net (Excluding Goodwill), Total |  |  |  |  |  |  |  |  |  | 8,285 |  |
Other intangible assets |  |  |  |  |  |  |  |  |  | 8,285 |  |
Expected future amortization expense |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  | 9,863 |  |  | 9,863 |  |
Other intangible assets |  |  |  |  |  |  |  |  |  | 8,285 |  |
Tropicana Las Vegas |  |  |  |  |  |  |  |  |  |  |  |
Reconciliation of goodwill and accumulated goodwill impairment losses |  |  |  |  |  |  |  |  |  |  |  |
Goodwill, net |  |  |  |  |  |  | 14,821 |  |  | 14,821 |  |
Goodwill, Ending Balance |  |  |  |  |  |  | 14,821 |  |  |  |  |
Expected future amortization expense |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  | 14,821 |  |  | 14,821 |  |
Argosy Casino Sioux City |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  |  |  |  |  |  |  |  |  |
Impairment of intangible asset |  |  |  |  |  |  |  |  | 3,100 |  |  |
Other Reporting Units |  |  |  |  |  |  |  |  |  |  |  |
Reconciliation of goodwill and accumulated goodwill impairment losses |  |  |  |  |  |  |  |  |  |  |  |
Goodwill, net |  |  |  |  |  |  | 8,208 |  |  | 8,208 |  |
Goodwill, Ending Balance |  |  |  |  |  |  | 8,208 |  |  |  |  |
Intangible assets |  |  |  |  |  |  |  |  |  |  |  |
Intangible Assets, Net (Excluding Goodwill), Total |  |  |  |  |  |  |  |  |  | 1,581 |  |
Other intangible assets |  |  |  |  |  |  |  |  |  | 1,581 |  |
Expected future amortization expense |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  | 8,208 |  |  | 8,208 |  |
Other intangible assets |  |  |  |  |  |  |  |  |  | 1,581 |  |
Argosy Casino Sioux City Facility |  |  |  |  |  |  |  |  |  |  |  |
Reconciliation of goodwill and accumulated goodwill impairment losses |  |  |  |  |  |  |  |  |  |  |  |
Goodwill impairment losses |  |  |  | $ (20,900) |  |  |  |  | (68,700) |  |  |
Intangible assets |  |  |  |  |  |  |  |  |  |  |  |
Goodwill impairment losses |  |  |  | $ 20,900 |  |  |  |  | $ 68,700 |  |  |
Boomtown Biloxi |  |  |  |  |  |  |  |  |  |  |  |
Reconciliation of goodwill and accumulated goodwill impairment losses |  |  |  |  |  |  |  |  |  |  |  |
Goodwill, net |  |  |  |  |  |  | 22,365 |  |  | 22,365 |  |
Goodwill, Ending Balance |  |  |  |  |  |  | 22,365 |  |  |  |  |
Expected future amortization expense |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  | 22,365 |  |  | 22,365 |  |
Hollywood Casino Tunica |  |  |  |  |  |  |  |  |  |  |  |
Reconciliation of goodwill and accumulated goodwill impairment losses |  |  |  |  |  |  |  |  |  |  |  |
Goodwill, net |  |  |  |  |  |  | 44,042 |  |  | 44,042 |  |
Goodwill, Ending Balance |  |  |  |  |  |  | 44,042 |  |  |  |  |
Expected future amortization expense |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  | 44,042 |  |  | 44,042 |  |
Argosy Casino Sioux City gaming license | Argosy Casino Sioux City Facility |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  |  |  |  |  |  |  |  |  |
Finite-lived intangible assets, Gross Carrying Value |  |  |  |  |  |  |  |  |  | 20,949 |  | 20,949
Finite-lived intangible assets, Accumulated Amortization |  |  |  |  |  |  |  |  |  | 20,949 |  | 20,949
Other intangible assets |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  |  |  |  |  |  |  |  |  |
Finite-lived intangible assets, Gross Carrying Value |  |  |  |  |  |  |  |  |  | 72,223 |  | 56,126
Finite-lived intangible assets, Accumulated Amortization |  |  |  |  |  |  |  |  |  | 56,186 |  | 55,664
Finite-lived intangible assets, Net Book Value |  |  |  |  |  |  |  |  |  | 16,037 |  | 462
Change in indefinite life intangible assets during the period |  |  |  |  |  |  | $ (28,000) |  |  |  |  |
Expected future amortization expense |  |  |  |  |  |  |  |  |  |  |  |
Finite-lived intangible assets, Net Book Value |  |  |  |  |  |  |  |  |  | $ 16,037 |  | $ 462
Customer relationships | Prairie State Gaming |  |  |  |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  |  |  |  |  |  |  |  |  |
Finite-lived intangible assets, Net Book Value |  |  |  |  |  |  |  |  |  |  | 15,700 |
Period of amortization | 10 years |  |  |  |  |  |  |  |  |  |  |
Expected future amortization expense |  |  |  |  |  |  |  |  |  |  |  |
Finite-lived intangible assets, Net Book Value |  |  |  |  |  |  |  |  |  |  | $ 15,700 |

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References No definition available. + Details
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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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