Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Other Intangibles - Additional Information (Detail)

v3.20.1
Goodwill and Other Intangibles - Additional Information (Detail) - USD ($)
3 Months Ended
Oct. 27, 2016
Aug. 31, 2014
Mar. 31, 2020
Finite-Lived Intangible Assets [Line Items]      
Intangible assets amortization expense     $ 65,000
CBI Merger      
Finite-Lived Intangible Assets [Line Items]      
Goodwill $ 11,000,000.0    
CBI Merger | Third-party originators intangible      
Finite-Lived Intangible Assets [Line Items]      
Intangible assets acquired $ 483,000    
CBI Merger | Core deposit intangible      
Finite-Lived Intangible Assets [Line Items]      
Intangible assets acquired   $ 2,200,000