Other Assets (Details Textual) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Accumulated amortization, incentives to lessees	$ 4,231	$ 3,696
Accumulated depreciation on FF&E and leasehold improvements	18,568	17,814
Accumulated amortization on loan closing costs	2,150	4,026
Accumulated amortization of in place leases	4,187	2,833
Accumulated amortization of finite-lived intangible assets, above market leases	$ 9,165	$ 8,845