Assets and Liabilities Measured at Fair Value (Details 4) (USD $)	6 Months Ended	10 Months Ended	12 Months Ended			3 Months Ended	12 Months Ended		12 Months Ended
	Jun. 30, 2013	Dec. 31, 2012 Condominium inventory (finished units) item	Dec. 31, 2012 Condominium inventory (finished units) Market comparable Minimum	Dec. 31, 2012 Condominium inventory (finished units) Market comparable Maximum	Dec. 31, 2012 Condominium inventory (work in progress)	Dec. 31, 2012 Condominium inventory (work in progress) Cordillera	Dec. 31, 2012 Condominium inventory (work in progress) Market comparable	Dec. 31, 2012 Note receivable, net	Dec. 31, 2012 Note receivable, net Market comparable Minimum	Dec. 31, 2012 Note receivable, net Market comparable Maximum
Quantitative Information about Level 3 Fair Value Measurements
Fair Value at the end of the period		$ 13,120,000			$ 1,150,000			$ 18,037,000
Amount per condo unit due to limited market comparables (in dollars per square foot)			362	607			112
Transfers of assets or liabilities between the levels of the fair value hierarchy	0
Amount per acre due to limited market comparables (in dollars per acre)							200,000		43,909	79,529
Number of properties sold		12
Current book value of the remaining units		6,500,000
Condominium inventory non-cash charges	0					11,700,000
Reclassification of condominium inventory to land						700,000
Reclassification of condominium inventory to building						$ 500,000