Quarterly report pursuant to Section 13 or 15(d)

Organization and Basis of Presentation - Additional Information (Detail)

v3.20.2
Organization and Basis of Presentation - Additional Information (Detail) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2020
Dec. 31, 2019
Organization And Basis Of Presentation [Line Items]    
Increase to beginning balance of allowance for credit losses $ 17,400  
Decrease to beginning balance of allowance for off balance sheet items (300)  
Retained earnings 88,859 $ 100,551
Cumulative Effect Period of Adoption Adjustment | Impact of ASU 2016-13 Adoption    
Organization And Basis Of Presentation [Line Items]    
Retained earnings $ 12,200