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Borrowings - Additional Information (Detail) - USD ($) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019 | Dec. 31, 2019
Debt Instrument [Line Items] |  |  |  |  |
Overnight advances from federal home loan banks | $ 0 |  | $ 0 |  | $ 15,000,000.0
Advances from the FHLB | $ 150,000,000.0 |  | $ 150,000,000.0 |  | $ 75,000,000.0
Weighted average interest rate of outstanding advances (percent) | 1.63% |  | 1.63% |  | 1.71%
Interest expense on borrowings | $ 760,000 | $ 0 | $ 1,256,000 | $ 72,000 |
Weighted average interest rate of overnight advances (percent) |  |  |  |  | 1.66%
Outstanding borrowings |  |  |  |  | $ 0
Pledged loans receivable, carrying value | 2,400,000,000 |  | 2,400,000,000 |  | 1,400,000,000
Remaining available borrowing capacity | 1,500,000,000 |  | 1,500,000,000 |  |
FHLB statutory lending limit | 1,400,000,000 |  | 1,400,000,000 |  | 878,400,000
Loans pledged with FRB | 50,000,000.0 |  | 50,000,000.0 |  | 30,200,000
Borrowing capacity through Fed Discount Window | 47,900,000 |  | 47,900,000 |  | $ 29,600,000
Paycheck Protection Program |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Advances from Federal Reserve Bank | $ 101,800,000 |  | $ 101,800,000 |  |
Advances from Federal Reserve Bank, percentage | 0.35% |  | 0.35% |  |

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- Definition Borrowing capacity available based on pledged collateral. + References No definition available. + Details
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- Definition Federal home loan bank advances maturities summary average interest rate one to three years from balance sheet date. + References No definition available. + Details
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- Definition Federal Home Loan Bank, Advances, Maturities Summary, Due Overnight + References No definition available. + Details
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- Definition Federal Reserve Bank advances. + References No definition available. + Details
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- Definition Federal Reserve Bank advances, percentage. + References No definition available. + Details
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- Definition Amount of Federal Home Loan Bank (FHLBank) advances to member financial institutions. + References No definition available. + Details
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