Income Taxes - Deferred Taxes (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Document Fiscal Year Focus	2014
Deferred Tax Assets, Net [Abstract]
Investments in real estate partnerships	$ 8,427	$ 8,314
Provision for impairment	3,299	3,273
Deferred interest expense	2,538	4,295
Capitalized costs under Section 263A	1,832	2,184
Net operating loss carryforward	0	2,019
Employee benefits	385	488
Other	1,370	887
Deferred tax assets	17,851	21,460
Valuation allowance	(17,302)	(20,603)
Deferred tax assets, net	549	857
Deferred Tax Liabilities, Net [Abstract]
Straight line rent	549	537
Depreciation	0	320
Deferred tax liabilities	549	857
Net deferred tax assets	$ 0	$ 0