Discontinued Operations (Details) (USD $)	3 Months Ended		6 Months Ended			3 Months Ended			6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013	Jun. 30, 2014 Lumiere Place [Member]	Dec. 31, 2013 Ameristar Lake Charles [Domain]	Jun. 30, 2014 Boomtown Reno [Member] acre	Jun. 30, 2014 Atlantic City [Member]	Jun. 30, 2014 Springfield, Massachusetts [Domain] acre
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Divestiture of Business, Purchase price, Net						$ 252,300,000
Cash Divested from Deconsolidation						11,000,000
Cash Refund to Buyer from Divestiture of Business, Working Capital Adjustment						2,000,000
Proceeds from Divestiture of Businesses							180,000,000
Proceed From Divestiture of Business, Retained Cash Deposit							35,000,000
Proceed From Divestiture of Business, Additional Cash Consideration, Subsequent Release From Escrow							25,000,000
Proceed From Divestiture of Business, Deferred Consideration							10,000,000
Reno additional land for sale (acres)										40
Number of acres held from discontinued operation								810
Proceeds from Sale of Property Held-for-sale									29,500,000
Income (Loss) from Discontinued Operation Disclosures
Revenues	0	48,800,000	41,000,000	95,000,000
Operating loss	(100,000)	5,100,000	200,000	9,200,000
Income tax benefit	100,000	(3,100,000)	(100,000)	(4,800,000)
Assets:
Land, buildings, vessels and equipment, net	13,000,000		13,000,000		275,300,000
Other assets, net	12,600,000		12,600,000		47,200,000
Assets of discontinued operations held for sale	25,596,000		25,596,000		322,548,000
Liabilities:
Liabilities of discontinued operations held for sale	4,346,000		4,346,000		26,103,000
Net assets	$ 21,300,000		$ 21,300,000		$ 296,400,000