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FHLB Advances, Other Borrowings and Subordinated Notes (Narrative) (Details) - USD ($)		5 Months Ended	6 Months Ended
	May 31, 2023	May 30, 2023	Jun. 30, 2023	Dec. 31, 2022	Dec. 12, 2022	Jun. 30, 2022	Sep. 18, 2018
Debt Instrument [Line Items]
Credit agreement balances			$ 185,539,000	$ 199,793,000		$ 69,619,000
Secured borrowings			326,348,000	317,942,000		334,467,000
Collateral Pledged
Debt Instrument [Line Items]
Pledged financial instruments			17,800,000
Securities sold under repurchase agreements | Overnight Sweep Collateral
Debt Instrument [Line Items]
Securities sold under agreements to repurchase			16,273,000	17,600,000		16,400,000
Secured Debt
Debt Instrument [Line Items]
Secured borrowings			9,200,000
Term Loan Facility
Debt Instrument [Line Items]
Credit agreement balances					$ 200,000,000		$ 150,000,000
Amount outstanding			185,500,000
Revolving Credit Facility
Debt Instrument [Line Items]
Credit agreement balances							$ 100,000,000
Amount outstanding			0
Receivables Purchase Agreement | Secured Debt
Debt Instrument [Line Items]
Secured borrowings			$ 317,100,000	$ 309,700,000		$ 326,000,000
Borrowing capacity	$ 520,000,000
Borrowing fee rate	0.825%	0.775%
Receivables Purchase Agreement | Secured Debt | Canadian Commercial Paper Rate
Debt Instrument [Line Items]
Basis spread on variable rate			0.825%

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