Securities Sold Under Agreements to Repurchase - Remaining Contractual Maturities of Repurchase Agreements by Class of Collateral Pledged (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	$ 425,490	$ 450,490
Debt Securities Issued by States and Political Subdivisions
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	490	490
Residential - Government Agencies
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	30,597	52,092
Residential - U.S. Government-Sponsored Enterprises
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	394,403	397,908
Maturity Up To 90 Days
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0	0
Maturity Up To 90 Days | Debt Securities Issued by States and Political Subdivisions
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0	0
Maturity Up To 90 Days | Residential - Government Agencies
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0	0
Maturity Up To 90 Days | Residential - U.S. Government-Sponsored Enterprises
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0	0
Maturity 91 To 365 Days
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0	0
Maturity 91 To 365 Days | Debt Securities Issued by States and Political Subdivisions
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0	0
Maturity 91 To 365 Days | Residential - Government Agencies
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0	0
Maturity 91 To 365 Days | Residential - U.S. Government-Sponsored Enterprises
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0	0
Maturity 1 To 3 Years
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	425,490	275,000
Maturity 1 To 3 Years | Debt Securities Issued by States and Political Subdivisions
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	490	0
Maturity 1 To 3 Years | Residential - Government Agencies
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	30,597	38,685
Maturity 1 To 3 Years | Residential - U.S. Government-Sponsored Enterprises
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	394,403	236,315
Maturity After 3 Years
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0	175,490
Maturity After 3 Years | Debt Securities Issued by States and Political Subdivisions
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0	490
Maturity After 3 Years | Residential - Government Agencies
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0	13,407
Maturity After 3 Years | Residential - U.S. Government-Sponsored Enterprises
Assets Sold Under Agreements To Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	$ 0	$ 161,593