Derivatives - Summary Information Regarding Derivatives (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2022	Dec. 31, 2021
Third Party interest rate swaps
Classified in Other Assets:
Notional Amount	$ 963,994	$ 326,941
Average Maturity (Years)	7 years 6 months	7 years 8 months 12 days
Weighted Average Fixed Rate	3.67%	3.14%
Weighted Average Variable Rate	198.00%	232.00%
Fair Value	$ 105,098	$ 9,847
Classified in Other Liabilities:
Notional Amount		$ 607,688
Average Maturity (Years)		8 years 2 months 12 days
Weighted Average Fixed Rate		3.97%
Weighted Average Variable Rate		187.00%
Fair  Value		$ (33,952)
Customer interest rate swaps
Classified in Other Assets:
Notional Amount		$ 607,688
Average Maturity (Years)		8 years 2 months 12 days
Weighted Average Fixed Rate		3.97%
Weighted Average Variable Rate		187.00%
Fair Value		$ 33,952
Classified in Other Liabilities:
Notional Amount	$ 963,994	$ 326,941
Average Maturity (Years)	7 years 6 months	7 years 8 months 12 days
Weighted Average Fixed Rate	3.67%	3.14%
Weighted Average Variable Rate	198.00%	232.00%
Fair  Value	$ (105,098)	$ (9,847)