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Loans Receivable - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Loans and Leases Receivable Disclosure [Line Items]          
Loans and leases receivable gross amount $ 415,807   $ 415,807   $ 328,247
Paycheck Protection Program (PPP) [Member] | Covid -19 [Member] | Small Business Administration (SBA) [Member]          
Loans and Leases Receivable Disclosure [Line Items]          
Loans and leases receivable gross amount 63,358   63,358   $ 40,953
Proceesing fees received     5,000    
Loan processing fees recognized in the income statement $ 545 $ 1,417 $ 1,401 $ 1,417