Other Assets (Schedule of Other Assets) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Other Assets [Abstract]
Deferred financing costs, net of accumulated amortization of $6,337 and $4,532, respectively	$ 9,439	$ 11,172
Lease commissions, net of accumulated amortization of $96 and $54, respectively	1,110	394
Investments in unconsolidated partnerships	101	106
Tenant receivable, net of allowances for doubtful accounts of $1,874 and $0, respectively	2,851	3,361
Notes receivables	10,000	0
Straight-line rent receivable	37,027	25,566
Restricted cash held in escrow	13,481	13,382
Real estate escrow deposits	0	250
Restricted cash	534	734
Derivative assets	315	273
Prepaid and other assets, net of allowances for doubtful accounts of $903 and $0, respectively	4,510	2,189
Total other assets	79,368	57,427
Deferred financing costs, accumulated amortization	6,337	4,532
Lease commissions, accumulated amortization	96	54
Tenant receivable, allowances for doubtful accounts	1,874	0
Prepaid and other assets, allowances for doubtful accounts	$ 903	$ 0