Assets and Liabilities Measured at Fair Value (Details 2) (USD $)	3 Months Ended	6 Months Ended		12 Months Ended	3 Months Ended		12 Months Ended
	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012 Bent Tree Green	Jun. 30, 2013 Becket House Leasehold Interest	Mar. 31, 2013 Becket House Leasehold Interest	Dec. 31, 2012 Nonrecurring fair value measurements Chase - The Private Residences	Dec. 31, 2012 Nonrecurring fair value measurements Royal Island	Dec. 31, 2012 Nonrecurring fair value measurements Rio Salado	Dec. 31, 2012 Nonrecurring fair value measurements Cordillera
Assets and liabilities measured at fair value
Non-cash impairment charge		$ 305,000			$ 0	$ 300,000
Other asset impairment charges									7,300,000
Condominium inventory impairment charges		0					400,000			11,700,000
Provision for loan loss related to notes receivable	12,022,000		12,022,000					12,000,000
Impairment charges recognized in discontinued operations				$ 1,300,000