Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Other Intangibles - Additional Information (Detail)

v3.20.2
Goodwill and Other Intangibles - Additional Information (Detail) - USD ($)
3 Months Ended 9 Months Ended
Oct. 27, 2016
Aug. 31, 2014
Sep. 30, 2020
Mar. 31, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Finite-Lived Intangible Assets [Line Items]              
Intangible assets amortization expense     $ 65,000   $ 77,000 $ 196,000 $ 232,000
Impairment of goodwill and other intangible assets       $ 0      
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