XML 40 R56.htm IDEA: XBRL DOCUMENT v3.20.1
Business Combinations - Additional Information (Detail) - USD ($)
$ in Thousands
12 Months Ended
Apr. 01, 2018
Dec. 31, 2019
Dec. 31, 2018
Business Acquisition [Line Items]      
Goodwill   $ 18,176 $ 18,176
Civic Bank and Trust      
Business Acquisition [Line Items]      
Merger, common stock issued (in shares) 970,390    
Acquisition-related costs   $ 565  
Goodwill $ 9,052    
Loans 96,385    
Customer receivables with a fair value and gross contractual amounts receivable 96,903    
Civic Bank and Trust | Core Deposit Intangibles      
Business Acquisition [Line Items]      
Fair value of intangible assets $ 558