Loans and the Allowance for Credit Losses (Details) - Fair value of collateral $ in Thousands	Mar. 31, 2021 USD ($)
Loans and the Allowance for Loan and Lease Losses (Details) - Purchase credit impaired loans [Line Items]
Fair value of collateral	$ 92,368
Real Estate [Member]
Loans and the Allowance for Loan and Lease Losses (Details) - Purchase credit impaired loans [Line Items]
Fair value of collateral	66,197
Other [Member]
Loans and the Allowance for Loan and Lease Losses (Details) - Purchase credit impaired loans [Line Items]
Fair value of collateral	26,171
Commercial Portfolio Segment [Member]
Loans and the Allowance for Loan and Lease Losses (Details) - Purchase credit impaired loans [Line Items]
Fair value of collateral	32,501
Commercial Portfolio Segment [Member] | Real Estate [Member]
Loans and the Allowance for Loan and Lease Losses (Details) - Purchase credit impaired loans [Line Items]
Fair value of collateral	6,330
Commercial Portfolio Segment [Member] | Other [Member]
Loans and the Allowance for Loan and Lease Losses (Details) - Purchase credit impaired loans [Line Items]
Fair value of collateral	26,171
Commercial Real Estate Portfolio Segment [Member]
Loans and the Allowance for Loan and Lease Losses (Details) - Purchase credit impaired loans [Line Items]
Fair value of collateral	29,441
Commercial Real Estate Portfolio Segment [Member] | Real Estate [Member]
Loans and the Allowance for Loan and Lease Losses (Details) - Purchase credit impaired loans [Line Items]
Fair value of collateral	29,441
Commercial Real Estate Portfolio Segment [Member] | Other [Member]
Loans and the Allowance for Loan and Lease Losses (Details) - Purchase credit impaired loans [Line Items]
Fair value of collateral
Commercial Construction Portfolio Segment [Member]
Loans and the Allowance for Loan and Lease Losses (Details) - Purchase credit impaired loans [Line Items]
Fair value of collateral	19,402
Commercial Construction Portfolio Segment [Member] | Real Estate [Member]
Loans and the Allowance for Loan and Lease Losses (Details) - Purchase credit impaired loans [Line Items]
Fair value of collateral	19,402
Commercial Construction Portfolio Segment [Member] | Other [Member]
Loans and the Allowance for Loan and Lease Losses (Details) - Purchase credit impaired loans [Line Items]
Fair value of collateral
Residential Real Estate Portfolio Segment [Member]
Loans and the Allowance for Loan and Lease Losses (Details) - Purchase credit impaired loans [Line Items]
Fair value of collateral	11,024
Residential Real Estate Portfolio Segment [Member] | Real Estate [Member]
Loans and the Allowance for Loan and Lease Losses (Details) - Purchase credit impaired loans [Line Items]
Fair value of collateral	11,024
Residential Real Estate Portfolio Segment [Member] | Other [Member]
Loans and the Allowance for Loan and Lease Losses (Details) - Purchase credit impaired loans [Line Items]
Fair value of collateral
Consumer Portfolio Segment [Member]
Loans and the Allowance for Loan and Lease Losses (Details) - Purchase credit impaired loans [Line Items]
Fair value of collateral
Consumer Portfolio Segment [Member] | Real Estate [Member]
Loans and the Allowance for Loan and Lease Losses (Details) - Purchase credit impaired loans [Line Items]
Fair value of collateral
Consumer Portfolio Segment [Member] | Other [Member]
Loans and the Allowance for Loan and Lease Losses (Details) - Purchase credit impaired loans [Line Items]
Fair value of collateral