Debt - Narrative (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Short term borrowings	$ 88,000,000	$ 102,647,000
Maturity of federal funds purchased from correspondent banks	one business day
Real estate secured loans	$ 2,300,000,000
Current borrowing available	1,400,000,000
Maximum borrowing capacity	1,600,000,000
FHLB
Debt Instrument [Line Items]
Letter of credit outstanding, amount	183,500,000	189,000,000
Other Correspondent Banks
Debt Instrument [Line Items]
Outstanding drawings	0	$ 0
Line of credit facility, remaining borrowing capacity	$ 35,000,000