Loans and Allowance for Credit Losses - Amortized cost basis of collateral-dependent loans (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Loans and Leases Receivable Disclosure [Line Items]
Financing receivable, net	$ 7,561,188	$ 6,990,633
Business or Other Assets
Loans and Leases Receivable Disclosure [Line Items]
Financing receivable, net	3,613	7,656
Business or Other Assets | Commercial
Loans and Leases Receivable Disclosure [Line Items]
Financing receivable, net	1,563	3,098
Business or Other Assets | PPP loans
Loans and Leases Receivable Disclosure [Line Items]
Financing receivable, net	0	1,365
Business or Other Assets | Income producing - commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Financing receivable, net	2,000	3,193
Business or Other Assets | Owner occupied - commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Financing receivable, net	0	0
Business or Other Assets | Real estate mortgage - residential
Loans and Leases Receivable Disclosure [Line Items]
Financing receivable, net	0	0
Business or Other Assets | Construction - commercial and residential
Loans and Leases Receivable Disclosure [Line Items]
Financing receivable, net	0	0
Business or Other Assets | Home equity
Loans and Leases Receivable Disclosure [Line Items]
Financing receivable, net	0	0
Business or Other Assets | Other Consumer
Loans and Leases Receivable Disclosure [Line Items]
Financing receivable, net	50	0
Real Estate
Loans and Leases Receivable Disclosure [Line Items]
Financing receivable, net	27,084	31,479
Real Estate | Commercial
Loans and Leases Receivable Disclosure [Line Items]
Financing receivable, net	1,871	6,821
Real Estate | PPP loans
Loans and Leases Receivable Disclosure [Line Items]
Financing receivable, net	0	0
Real Estate | Income producing - commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Financing receivable, net	4,328	19,378
Real Estate | Owner occupied - commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Financing receivable, net	19,187	42
Real Estate | Real estate mortgage - residential
Loans and Leases Receivable Disclosure [Line Items]
Financing receivable, net	1,698	1,779
Real Estate | Construction - commercial and residential
Loans and Leases Receivable Disclosure [Line Items]
Financing receivable, net	0	3,093
Real Estate | Home equity
Loans and Leases Receivable Disclosure [Line Items]
Financing receivable, net	0	366
Real Estate | Other Consumer
Loans and Leases Receivable Disclosure [Line Items]
Financing receivable, net	$ 0	$ 0