Discontinued Operations (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net proceeds from sale of discontinued operations			$ 0	$ 10,784,000
Income (Loss) from Discontinued Operation Disclosures
Revenues	700,000	9,600,000	900,000	18,100,000
Operating income (loss)	100,000	(1,100,000)	0	(1,800,000)
Income tax benefit	0	100,000	0	100,000
Income (loss) from discontinued operations, net of income taxes	88,000	(985,000)	43,000	(1,668,000)
Assets:
Land	36,600,000		36,600,000		36,600,000
Other assets, net	2,000,000		2,000,000		2,000,000
Assets of Disposal Group, Including Discontinued Operation, Current	38,609,000		38,609,000		38,609,000
Liabilities:
Liabilities of Disposal Group, Including Discontinued Operation, Current	0		0		0
Net assets	38,600,000		38,600,000		38,600,000
Boomtown Reno [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Discontinued Operation, Gross Amount of Proceeds		12,900,000
Gain on Sale of Discontinued Operation				1,100,000
Net proceeds from sale of discontinued operations				10,784,000
Cash Sold to Buyer				2,100,000
Additional Proceeds From Sale of Divested Business			500,000
Reno additional land for sale (acres)			27
Potential proceeds from sale of additional interest	3,800,000
Number of acres held from discontinued operation			783
Percentage of Option to Purchase Company's Interest			100.00%
Number of Years, Option to Purchase Company's Membership Interest			1 year
Atlantic City [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from Sale of Property Held-for-sale			$ 30,600,000