Other Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Other Assets.
Deferred leasing costs	$ 33,328	$ 34,142
Deferred rent receivable	31,215	29,309
Internal-use software	13,010	10,467
Prepaid expense	6,415	2,689
Corporate furniture, fixtures and equipment	5,556	6,157
Deferred financing costs	1,766	2,251
Other	4,984	1,618
Total	96,274	86,633
Estimated amortization of deferred leasing costs
Total	$ 33,328	$ 34,142