Borrowings - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Balance	$ 1,127,047,000	$ 377,309,000
Unused line of credit	339,000,000	250,000,000
Advances from federal home loan banks	$ 1,600,000,000	$ 1,900,000,000
Weighted average interest rate	4.36%	1.38%
Proceeds from long-term borrowings	$ 335,893,000	$ 37,120,000	$ 90,000,000
Subsidiaries
Debt Instrument [Line Items]
Unused line of credit	15,000,000	15,000,000
Advances from federal home loan banks	35,000,000	25,100,000
Line of Credit
Debt Instrument [Line Items]
Balance	0	0
Interest expense, debt	1,900,000	7,000	425,000
Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Interest expense, debt	122,000
Line of credit facility, maximum borrowing capacity		30,000,000
Proceeds from long-term borrowings	6,500,000	0
Repayments of long-term debt	6,500,000
Securities sold under agreements to repurchase
Debt Instrument [Line Items]
Advances from federal home loan banks	87,700,000	148,100,000
Securities sold under agreements to repurchase | Subsidiaries
Debt Instrument [Line Items]
Advances from federal home loan banks	28,300,000	44,100,000
FHLB advances
Debt Instrument [Line Items]
Balance	1,090,159,000	340,495,000
Interest expense, debt	$ 11,500,000	$ 7,600,000	17,700,000
Weighted average interest rate	4.37%	1.17%
Notes payable
Debt Instrument [Line Items]
Balance	$ 29,894,000	$ 29,841,000
Interest expense, debt	$ 1,100,000	25,000
Debt instrument, face amount		$ 30,000,000
Weighted average interest rate	3.35%	3.35%
Junior subordinated debt
Debt Instrument [Line Items]
Balance	$ 6,994,000	$ 6,973,000
Interest expense, debt	$ 370,000	$ 245,000	295,000
Weighted average interest rate	7.69%	3.07%
Interest rate, effective percentage	7.69%	3.07%
Subordinated notes
Debt Instrument [Line Items]
Interest expense, debt	$ 0	$ 0	$ 448,000
Interest Rate Swap | FHLB advances
Debt Instrument [Line Items]
Notional amount of derivative	$ 290,000,000	$ 190,000,000
London Interbank Offered Rate (LIBOR) | Junior subordinated debt
Debt Instrument [Line Items]
Basis spread on variable rate	2.95%