Loans - Additional Information (Detail) - USD ($) |
3 Months Ended | |
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Mar. 31, 2020 |
Dec. 31, 2019 |
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Accrued interest on loans | $ 11,536,000 | $ 11,742,000 |
| Loans pledged to secure advances | 2,400,000,000 | 1,400,000,000 |
| Loans 90 days or more past due and still accruing | 5,843,000 | 0 |
| TDR loans receivable | $ 30,200,000 | 56,300,000 |
| Principal and interest due | 3 months | |
| Reserves relating to loans included in allowance for credit losses | $ 98,000 | 22,700,000 |
| Loans default payment past due period | 30 days | |
| Total recorded investment | $ 35,000 | 132,000 |
| Loans | Accrued Interest | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Accrued interest on loans | $ 10,000,000.0 | $ 10,000,000.0 |
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- Definition Financing receivable period of modified contractually past due loans to be considered as payment default. No definition available.
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- Definition Loans held for sale excluded from TDR loans receivable. No definition available.
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- Definition Maximum period for interest to be due. No definition available.
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- Definition Reserve related to TDR loans included in allowance for credit losses. No definition available.
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Amount of financing receivable modified as troubled debt restructuring. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of financing receivable 90 days or more past due and still accruing. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Carrying amount as of the balance sheet date of loans that have been pledged as collateral for borrowings. If the secured party has the right by contract or custom to sell or re-pledge the collateral, then the debtor reclassifies that asset and report that asset in its statement of financial position separately from other assets not so encumbered. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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