Derivatives - Summary Information Regarding Derivatives (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
3rd Party interest rate swaps
Classified in Other Assets:
Notional Amount	$ 718,287	$ 326,941
Average Maturity (Years)	7 years 7 months 6 days	7 years 8 months 12 days
Weighted Average Fixed Rate	3.39%	3.14%
Weighted Average Variable Rate	206.00%	232.00%
Fair Value	$ 38,550	$ 9,847
Classified in Other Liabilities:
Notional Amount	$ 200,010	$ 607,688
Average Maturity (Years)	8 years 7 months 6 days	8 years 2 months 12 days
Weighted Average Fixed Rate	4.72%	3.97%
Weighted Average Variable Rate	189.00%	187.00%
Fair  Value	$ (8,923)	$ (33,952)
Customer interest rate swaps
Classified in Other Assets:
Notional Amount	$ 200,010	$ 607,688
Average Maturity (Years)	8 years 7 months 6 days	8 years 2 months 12 days
Weighted Average Fixed Rate	4.72%	3.97%
Weighted Average Variable Rate	189.00%	187.00%
Fair Value	$ 8,923	$ 33,952
Classified in Other Liabilities:
Notional Amount	$ 718,287	$ 326,941
Average Maturity (Years)	7 years 7 months 6 days	7 years 8 months 12 days
Weighted Average Fixed Rate	3.39%	3.14%
Weighted Average Variable Rate	206.00%	232.00%
Fair  Value	$ (38,550)	$ (9,847)