Loans - Schedule of Outstanding Balance and Related Allowance on Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Loan Balance	$ 5,767,039	$ 5,847,484
Loan Purchase [Member]
Loan Balance	32,337	65,801
ACL Balance	2,040	4,617
Loan Purchase [Member] | Real Estate [Member]
Loan Balance	19,274	39,229
ACL Balance	348	2,487
Loan Purchase [Member] | Real Estate [Member] | Residential Portfolio Segment [Member]
Loan Balance	13,396	14,895
ACL Balance	197	201
Loan Purchase [Member] | Real Estate [Member] | Commercial Portfolio Segment
Loan Balance	5,878	24,334
ACL Balance	151	2,286
Loan Purchase [Member] | Other Loans [Member]
Loan Balance	13,063	26,572
ACL Balance	1,692	2,130
Loan Purchase [Member] | Other Loans [Member] | Commercial Loan Portfolio Segment [Member]
Loan Balance	9,167	20,990
ACL Balance	1,531	1,896
Loan Purchase [Member] | Other Loans [Member] | Home Equity and Improvement Portfolio Segment [Member]
Loan Balance	3,405	4,912
ACL Balance	154	214
Loan Purchase [Member] | Other Loans [Member] | Consumer Portfolio Segment [Member]
Loan Balance	491	670
ACL Balance	$ 7	$ 20