Quarterly report pursuant to Section 13 or 15(d)

Deposits - Scheduled Maturities of Time Deposits (Detail)

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Deposits - Scheduled Maturities of Time Deposits (Detail) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Restricted Cash And Cash Equivalents Items [Line Items]    
2021 $ 611,325  
2022 438,364 $ 1,122,132
2023 31,661 130,147
2024 31,254 23,685
2024   5,382
2025 and thereafter 3,520  
2025 and thereafter   2,353
Total 1,116,124 1,283,699
Time Deposits of $250,000 or More    
Restricted Cash And Cash Equivalents Items [Line Items]    
2021 184,175  
2022 77,978 296,455
2023 810 14,315
2024   804
2025 and thereafter 264  
2025 and thereafter   264
Total 263,227 311,838
Other Time Deposits    
Restricted Cash And Cash Equivalents Items [Line Items]    
2021 427,150  
2022 360,386 825,677
2023 30,851 115,832
2024 31,254 22,881
2024   5,382
2025 and thereafter 3,256  
2025 and thereafter   2,089
Total $ 852,897 $ 971,861