XML 40 R30.htm IDEA: XBRL DOCUMENT v3.20.2
Basis of Presentation - Additional Information (Detail)
Sep. 30, 2020
Branch
Aug. 12, 2020
$ / shares
Organization And Basis Of Presentation [Line Items]    
Number of Branches | Branch 17  
Business Acquisition, Share Price | $ / shares   $ 0.50
Business Acquisition, Percentage of Voting Interests Acquired   54.00%
Blue Ridge    
Organization And Basis Of Presentation [Line Items]    
Business Acquisition, Percentage of Voting Interests Acquired   46.00%