Loans and the Allowance for Credit Losses (Details) - Loans held-for-sale - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Loans and the Allowance for Loan and Lease Losses (Details) - Purchase credit impaired loans [Line Items]
Total carrying amount	$ 6,159	$ 4,710
Commercial Real Estate Portfolio Segment [Member]
Loans and the Allowance for Loan and Lease Losses (Details) - Purchase credit impaired loans [Line Items]
Total carrying amount	5,298	1,990
Residential Real Estate Portfolio Segment [Member]
Loans and the Allowance for Loan and Lease Losses (Details) - Purchase credit impaired loans [Line Items]
Total carrying amount	$ 861	$ 2,720