Quarterly report pursuant to Section 13 or 15(d)

Deposits - Additional Information (Detail)

v3.20.2
Deposits - Additional Information (Detail) - USD ($)
Sep. 30, 2020
Dec. 31, 2019
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Time Deposits $ 1,338,504,000 $ 1,555,919,000
Accrued interest payable on deposits 5,400,000 11,200,000
Total deposits reclassified to loans due to overdrafts 808,000 1,500,000
Time Deposits of $250,000 or More    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Time Deposits $ 323,471,000 $ 299,914,000