Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Real estate assets:
Land	$ 144,336	$ 144,336
Buildings and improvements	1,180,959	1,178,144
Fixtures and equipment	904	904
Total real estate assets, gross	1,326,199	1,323,384
Less accumulated depreciation	189,995	180,756
Real estate assets, net	1,136,204	1,142,628
Acquired real estate leases, less accumulated amortization of $45,700 and $40,062, respectively	105,882	111,982
Investment in non-consolidated REITs	81,746	81,960
Cash and cash equivalents	17,282	21,267
Restricted cash	583	575
Tenant rent receivables, less allowance for doubtful accounts of $110 and $1,300, respectively	2,357	1,749
Straight-line rent receivable, less allowance for doubtful accounts of $135 and $135, respectively	36,287	35,441
Prepaid expenses	2,438	1,106
Related party mortgage loan receivables	96,896	93,896
Other assets	7,574	12,655
Office computers and furniture, net of accumulated depreciation of $626 and $584, respectively	533	544
Deferred leasing commissions, net of accumulated amortization of $12,607 and $11,812, respectively	24,920	23,376
Total assets	1,512,702	1,527,179
Liabilities:
Bank note payable	221,750	216,750
Term loan payable	400,000	400,000
Accounts payable and accrued expenses	25,493	31,122
Accrued compensation	540	2,540
Tenant security deposits	2,474	2,489
Other liabilities: derivative liability	778	1,219
Acquired unfavorable real estate leases, less accumulated amortization of $5,246 and $4,870, respectively	7,834	8,310
Total liabilities	658,869	662,430
Commitments and contingencies
Stockholders' Equity:
Preferred stock, $.0001 par value, 20,000,000 shares authorized, none issued or outstanding
Common stock, $.0001 par value, 180,000,000 shares authorized, 82,937,405 and 82,937,405 shares issued and outstanding, respectively	8	8
Additional paid-in capital	1,042,876	1,042,876
Accumulated other comprehensive loss	(778)	(1,219)
Accumulated distributions in excess of accumulated earnings	(188,273)	(176,916)
Total stockholders' equity	853,833	864,749
Total liabilities and stockholders' equity	$ 1,512,702	$ 1,527,179