Income Taxes (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Additional Income Taxes (Textual) [Abstract]
Deferred tax asset of the company's taxable REIT subsidiary, CREC	$ 86,035,000	$ 47,936,000
Amount of company's federal and state combined net operating loss carryforward	120,500,000
Net operating loss carryforwards of federal and state utilized	1,300,000
Alternative minimum tax credit carryforwards	72,000
Federal and state deferred tax assets due to NOL and AMT credit carryforwards	23,900,000
Interest carryforwards related to interest deductions	33,700,000	33,700,000
Deferred tax assets, interest carryforward	13,158,000	13,158,000
Income tax receivables		$ 500,000
Maximum [Member]
Income Taxes (Textual) [Abstract]
Expiration dates of the remaining net operating loss carryforwards range	2030
Minimum [Member]
Income Taxes (Textual) [Abstract]
Expiration dates of the remaining net operating loss carryforwards range	2022