Income Taxes (Textual) (Details) (USD $)			12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Minimum [Member]	Dec. 31, 2012 Maximum [Member]
Income Taxes (Textual) [Abstract]
Deferred tax asset of the company's taxable REIT subsidiary, CREC	$ 78,980,000	$ 86,035,000
Amount of company's federal and state combined net operating loss carryforward	197,700,000
Expiration dates of the remaining net operating loss carryforwards range			2023	2031
Alternative minimum tax credit carryforwards	63,000
Federal and state deferred tax assets due to NOL and AMT credit carryforwards	44,100,000
Interest carryforwards related to interest deductions	33,700,000	33,700,000
Deferred tax assets, interest carryforward	$ 13,158,000	$ 13,158,000