Other Assets, Net (Schedule of Other Assets, Net) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Other Assets [Abstract]
Deferred financing costs related to the revolver portion of the unsecured credit facility, net of accumulated amortization of $6,113 and $5,833, respectively	$ 2,017	$ 877
Lease commissions, net of accumulated amortization of $698 and $557, respectively	5,019	4,869
Investments in unconsolidated partnerships	119	113
Tenant receivables, net of allowances for doubtful accounts of $13,671 and $6,007, respectively	5,808	10,475
Notes receivable, net of allowances for loan losses of $6,778 and $4,294, respectively	13,497	15,128
Real estate-related notes receivable	514	514
Straight-line rent receivable	57,843	53,545
Restricted cash held in escrow	14,521	13,882
Restricted cash	1,285	1,110
Derivative assets	3,900	3,070
Prepaid and other assets	1,798	2,156
Total other assets, net	106,321	105,739
Deferred financing costs related to the revolver portion of the unsecured credit facility, accumulated amortization	6,113	5,833
Lease commissions, accumulated amortization	698	557
Tenant receivables, allowances for doubtful accounts	13,671	6,007
Notes receivable, allowances for loan losses	$ 6,778	$ 4,294