Loans Receivable - Schedule of Loans Receivable Internal Ratings (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Financing Receivable, Credit Quality Indicator [Line Items]
Percentage of Loan Portfolio	100.00%
Loans receivable, net	$ 137,619	$ 62,998
Performing Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, net	137,619
Watch List Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, net	0
Workout Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, net	$ 0
Real Estate Secured
Financing Receivable, Credit Quality Indicator [Line Items]
Percentage of Loan Portfolio	81.00%
Loans receivable, net	$ 111,942	42,037
Real Estate Secured | Performing Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, net	111,942
Real Estate Secured | Watch List Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, net	0
Real Estate Secured | Workout Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, net	$ 0
Other Secured
Financing Receivable, Credit Quality Indicator [Line Items]
Percentage of Loan Portfolio	19.00%
Loans receivable, net	$ 25,677	$ 20,961
Other Secured | Performing Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, net	25,677
Other Secured | Watch List Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, net	0
Other Secured | Workout Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Loans receivable, net	$ 0