Fair Value Measurements - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans not covered under loss-share agreements	$ 35,184,000		$ 18,288,000
Specific reserve included in allowance for loan losses	195,292,000	$ 166,468,000	192,090,000	$ 164,171,000
Valuation adjustment	0	0
Changes in fair value, gain (loss)	1,780,000	$ (13,021,000)
Impaired Loans, not covered
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Specific reserve included in allowance for loan losses	$ 15,070,000		$ 3,556,000