Supplemental Detail for Certain Components of Consolidated Balance Sheets - Other Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018
Other assets, net
Right of use asset - operating leases, net	$ 128,073
Right of use asset - financing leases	36,901
Financing receivables	22,592	$ 0
Prepaid expenses	16,905	14,695
Credit Facility origination costs, net	13,406	14,248
Impounds related to mortgages payable	10,256	9,555	$ 5,923
Restricted escrow deposits	9,081	1,129
Corporate assets, net	5,538	5,681
Non-refundable escrow deposits for pending acquisitions	0	200
Other items	4,180	1,853
Total other assets, net	$ 246,932	$ 47,361