Investments in Unconsolidated Joint Ventures - Summary of Financial Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Expenses:
Equity in net earnings of unconsolidated joint ventures	$ (111)	$ 1,059
Liabilities
Investment in unconsolidated joint ventures	2,271		2,442
Unconsolidated Properties
Revenues:
Rental	3,588	5,524
Other	911	1,590
Total revenues	4,499	7,114
Expenses:
Rental operating	2,820	3,871
Depreciation and amortization	1,700	1,689
Interest	1,503	2,340
Equity Method Investment, Summarized Financial Information, Other Expenses	12	0
Total expenses	6,035	7,900
Loss before net gains on sale of properties and extinguishment of debts	(1,536)	(786)
Net gain on sale of properties	0	26,885
Net gain on extinguishment of debts	0	(946)
Net income (loss)	(1,536)	25,153
Equity in net earnings of unconsolidated joint ventures	(111)	1,059
Assets
Investments in real estate, net	95,747		95,558
Other assets	17,687		18,509
Total assets	113,434		114,067
Liabilities
Mortgage and other loans	81,284		81,143
Other liabilities	4,348		4,176
Total liabilities	85,632		85,319
Investment in unconsolidated joint ventures	$ 2,271		$ 2,442