Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Other Intangibles - Additional Information (Detail)

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Goodwill and Other Intangibles - Additional Information (Detail) - USD ($)
3 Months Ended
Oct. 27, 2016
Aug. 31, 2014
Mar. 31, 2024
Finite-Lived Intangible Assets [Line Items]      
Impairment of goodwill and other intangible assets     $ 0
Goodwill and other intangible assets triggering event     No triggering event occurred as of, or subsequent to March 31, 2024, that would require a reassessment of goodwill and other intangible assets.
CBI Merger      
Finite-Lived Intangible Assets [Line Items]      
Goodwill $ 11,000,000.0    
CBI Merger | Third-party originator's intangible      
Finite-Lived Intangible Assets [Line Items]      
Intangible assets acquired $ 500,000    
CBI Merger | Core deposit intangible      
Finite-Lived Intangible Assets [Line Items]      
Intangible assets acquired   $ 2,200,000