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Equity Securities (Details) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Debt and Equity Securities, FV-NI [Line Items]    
Equity securities $ 1,330 $ 3,341
Equity securities without readily determinable fair value 1,100 3,100
Money Market Funds    
Debt and Equity Securities, FV-NI [Line Items]    
Equity securities, fair value 214 250
SBA Loan Fund    
Debt and Equity Securities, FV-NI [Line Items]    
Equity securities without readily determinable fair value $ 1,100 $ 3,100