Related Party and Affiliated Real Estate Joint Venture Transactions - Schedule of receivables (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Schedule of Other Related Party Transactions [Line Items]
Due from related parties	$ 16,611	$ 2,205
Mortgage Notes Receivable [Member]
Schedule of Other Related Party Transactions [Line Items]
Due from related parties	15,860	0
Other Receivables from Stores [Member]
Schedule of Other Related Party Transactions [Line Items]
Due from related parties	$ 751	$ 2,205