Securities - Trading Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Debt and Equity Securities, FV-NI [Line Items]
Trading securities	$ 9,960	$ 6,649
Corporate equity securities
Debt and Equity Securities, FV-NI [Line Items]
Trading securities	6,550	4,343
Mutual funds
Debt and Equity Securities, FV-NI [Line Items]
Trading securities	2,638	1,283
Certificates of deposit
Debt and Equity Securities, FV-NI [Line Items]
Trading securities	181	404
Corporate notes and bonds
Debt and Equity Securities, FV-NI [Line Items]
Trading securities	591	569
U.S. Gov’t sponsored entities
Debt and Equity Securities, FV-NI [Line Items]
Trading securities	$ 0	$ 50