Securities - Trading Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Debt and Equity Securities, FV-NI [Line Items]
Trading securities	$ 5,507	$ 9,809
Corporate equity securities
Debt and Equity Securities, FV-NI [Line Items]
Trading securities	3,699	7,946
Mutual funds
Debt and Equity Securities, FV-NI [Line Items]
Trading securities	487	807
Certificates of deposit
Debt and Equity Securities, FV-NI [Line Items]
Trading securities	614	350
Corporate notes and bonds
Debt and Equity Securities, FV-NI [Line Items]
Trading securities	655	655
U.S. Gov’t sponsored entities
Debt and Equity Securities, FV-NI [Line Items]
Trading securities	$ 52	$ 51