Other Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Retained interest investments	$ 10,494	$ 10,246
Accounts receivable, net	4,134	4,382
Prepaid expenses	5,823	5,849
Straight line rent	3,848	3,732
Income tax receivable	327	2,275
Other assets	7,782	6,751
Accrued interest receivable for Senior Notes held by special purpose entity	935	3,338
Total other assets	$ 33,343	$ 36,573