Income Taxes - Deferred Taxes (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Deferred Tax Assets, Net [Abstract]
Investments in real estate partnerships	$ 8,116	$ 8,124
Provision for impairment	5,667	4,047
Deferred interest expense	4,507	4,507
Capitalized costs under Section 263A	2,637	3,828
Net operating loss carryforward	1,033	280
Employee benefits	838	683
Other	435	791
Deferred tax assets	23,233	22,260
Valuation allowance	(22,114)	(6,479)
Deferred tax assets, net	1,119	15,781
Deferred Tax Liabilities, Net [Abstract]
Straight line rent	519	1,916
Depreciation	600	138
Deferred tax liabilities	1,119	2,054
Net deferred tax assets	$ 0	$ 13,727