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Loans and Allowance for Loan Losses - Summary of Activities of the Loans Collateral in Process of Foreclosure Related to Recreation and Medallion Loans (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Loans collateral in process of foreclosure - beginning balance |  | $ 52,711 | [1] | $ 49,495
Transfer from loans, net |  | 47,274 |  | 31,348
Sales |  | (7,812) |  | (9,106)
Cash payments received |  | (5,687) |  | (7,697)
Collateral valuation adjustments |  | (31,926) |  | (11,329)
Loans collateral in process of foreclosure - ending balance | [1] | 54,560 |  | 52,711
Recreation [Member] |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Loans collateral in process of foreclosure - beginning balance |  | 1,476 |  | 1,503
Transfer from loans, net |  | 14,871 |  | 14,512
Sales |  | (7,512) |  | (7,591)
Collateral valuation adjustments |  | (7,403) |  | (6,948)
Loans collateral in process of foreclosure - ending balance |  | 1,432 |  | 1,476
Medallion [Member] |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Loans collateral in process of foreclosure - beginning balance |  | 51,235 |  | 47,992
Transfer from loans, net |  | 32,403 |  | 16,836
Sales |  | (300) |  | (1,515)
Cash payments received |  | (5,687) |  | (7,697)
Collateral valuation adjustments |  | (24,523) |  | (4,381)
Loans collateral in process of foreclosure - ending balance |  | $ 53,128 |  | $ 51,235
[1] | Includes financed sales of this collateral to third parties that are reported separately from the loan portfolio, and that are conducted by Medallion Bank of $3,535 and $8,163 as of December 31, 2020 and 2019.

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- Definition Loan in process of foreclosure loan sales. + References No definition available. + Details
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- Definition Loan in process of foreclosure loans cash payment received. + References No definition available. + Details
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- Definition Loan in process of foreclosure loans collateral valuation adjustments, + References No definition available. + Details
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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. + References No definition available. + Details
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- Definition Recorded investment of consumer mortgage loan receivables secured by residential real estate properties for which formal foreclosure proceedings are in process. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 35 -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL49126937-111524 + Details
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- Details
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- Details
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