v3.19.1
Commitments and Contingencies (Details) - USD ($)
Mar. 31, 2019
Dec. 31, 2018
Other Commitments [Line Items]    
Unfunded commitments $ 1,600,000 $ 1,000,000
Related party mortgage originator (with flow mortgage loan purchase and sale agreement) [Member] | Non-Exchange Traded Equity Investment in Mortgage Originators [Member]    
Other Commitments [Line Items]    
Unfunded commitments   0
Maximum guarantees 25,000,000 25,000,000
Drawn down amount being guaranteed $ 9,400,000 $ 2,900,000