Securities Sold Under Reverse Repurchase Agreements and Short-term Borrowings - Schedule of Short-term Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
SECURITIES SOLD UNDER REVERSE REPURCHASE AGREEMENTS AND SHORT-TERM BORROWINGS
Notes payable - Community Development Equity Funds	$ 1,216	$ 1,518
Other interest-bearing liabilities	1,420
Securities sold under reverse repurchase agreements	140,666	164,174
Short-term debt recorded value	$ 143,302	$ 165,692