Quarterly report pursuant to Section 13 or 15(d)

Deposits - Additional Information (Detail)

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Deposits - Additional Information (Detail) - USD ($)
Mar. 31, 2022
Dec. 31, 2021
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Time deposits of $250,000 or more $ 896,568,000 $ 987,188,000
Accrued interest payable on deposits 1,000,000.0 1,200,000
Total deposits reclassified to loans due to overdrafts 257,000 277,000
Uninsured Time Deposits 250000 or More    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Uninsured time deposits at or exceeding the FDIC insurance limit of $250,000 $ 167,500,000 $ 173,500,000