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Loans and Lease Finance Receivables and Allowance for Loan Losses - Summary of Activity Related to Troubled Debt Restructurings (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018
Financing Receivable, Modifications [Line Items] |  |
Total TDRs | $ 3,356 | $ 7,103
Performing TDRs [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Beginning balance | 3,594 | 4,809
New modifications | 0 | 311
Payoffs/payments, net and other | (482) | (1,526)
TDRs returned to accrual status | 0 | 0
TDRs placed on nonaccrual status | 0 | 0
Ending balance | 3,112 | 3,594
Nonperforming TDRs [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Beginning balance | 3,509 | 4,200
New modifications | 0 | 316
Charge-offs | (78) | 0
Transfer to OREO | (2,275) | 0
Payoffs/payments, net and other | (912) | (1,007)
TDRs returned to accrual status | 0 | 0
TDRs placed on nonaccrual status | 0 | 0
Ending balance | $ 244 | $ 3,509

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- Definition The increase (decrease) in performing troubled debt restructurings financing receivables, because of returns to accrual status. + References No definition available. + Details
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- Definition The decrease in performing troubled debt restructurings financing receivables, because of the change in accrual status to nonaccrual. + References No definition available. + Details
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- Definition Amount of financing receivable modified as troubled debt restructuring. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=118939409&loc=d3e18845-111554 + Details
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- Definition Value transferred from mortgage loans to real estate owned (REO) in noncash transactions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4313-108586 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4332-108586 + Details
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