Loans Receivable - Schedule of Loans Receivable Internal Ratings (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment [Line Items]
Percentage of Loan Portfolio	100.00%
Loans receivable, net	$ 402,152	$ 807,954
Performing Loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, net	204,778
Watch List Loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, net	0
Workout Loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, net	$ 197,374
Real Estate Secured
Financing Receivable, Recorded Investment [Line Items]
Percentage of Loan Portfolio	46.00%
Loans receivable, net	$ 184,880	196,359
Real Estate Secured | Performing Loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, net	184,880
Real Estate Secured | Watch List Loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, net	0
Real Estate Secured | Workout Loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, net	$ 0
Other Secured
Financing Receivable, Recorded Investment [Line Items]
Percentage of Loan Portfolio	54.00%
Loans receivable, net	$ 217,272	$ 611,595
Other Secured | Performing Loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, net	19,898
Other Secured | Watch List Loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, net	0
Other Secured | Workout Loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable, net	$ 197,374