Repurchase Agreements and Other Borrowings - Schedule of Securities Financing Transactions (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Assets Sold Under Agreements To Repurchase [Line Items]
Securities pledged to Repurchase Agreements	$ 212,503	$ 206,937
U.S. Treasury Securities and Obligations of U.S. Government Corporations & Agencies
Assets Sold Under Agreements To Repurchase [Line Items]
Securities pledged to Repurchase Agreements	55,619	37,423
Mortgage-backed Securities: GSE Residential
Assets Sold Under Agreements To Repurchase [Line Items]
Securities pledged to Repurchase Agreements	156,884	168,480
Miscellaneous
Assets Sold Under Agreements To Repurchase [Line Items]
Securities pledged to Repurchase Agreements	$ 0	$ 1,034