Derivative Financial Instruments - Summary of Interest Rate Swaps Designated as Cash Flow Hedges (Detail) - Interest Rate Swaps [Member]	6 Months Ended	12 Months Ended
	Jun. 30, 2024	Dec. 31, 2023
Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Weighted average Maturity in years	4 years 5 months 15 days	4 years 7 months 17 days
Weighted average pay rate	7.40%	8.31%
Weighted average receive rate	7.58%	8.46%
Subordinated Note Hedges [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Weighted average Maturity in years	11 years 2 months 12 days	11 years 8 months 12 days
Weighted average pay rate	2.81%	2.80%
Weighted average receive rate	7.40%	7.43%
Variable Rate FHLB Advance Hedges [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Weighted average Maturity in years	1 year 8 months 12 days	2 years 2 months 12 days
Weighted average pay rate	3.59%	3.58%
Weighted average receive rate	5.33%	5.35%
Prime Based Receivable Loan Hedges [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Weighted average Maturity in years		2 months 12 days
Weighted average pay rate	0.00%	8.50%
Weighted average receive rate	0.00%	5.60%
Cash Flow Hedges [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Weighted average Maturity in years	2 years 4 months 24 days	1 year 4 months 24 days
Weighted average pay rate	3.53%	6.43%
Weighted average receive rate	5.47%	5.56%