Loans and Lease Finance Receivables and Allowance for Credit Losses - Summary of Activity Related to Troubled Debt Restructurings (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Financing Receivable, Modifications [Line Items]
Ending balance	$ 5,198		$ 5,198
Total TDRs	5,198
Performing TDRs [Member]
Financing Receivable, Modifications [Line Items]
Beginning balance	5,259	$ 5,813	5,293	$ 2,159
New modifications	0	2,453		7,096
Payoffs/payments, net and other	61	(51)	95	(1,040)
TDRs returned to accrual status	0	0		0
TDRs placed on nonaccrual status	0	0		0
Ending balance	5,198	8,215	5,198	8,215
Nonperforming TDRs [Member]
Financing Receivable, Modifications [Line Items]
Beginning balance	0	0	0	0
New modifications	0	0		0
Charge-offs	0	0		0
Payoffs/payments, net and other	0	0		0
TDRs returned to accrual status	0	0	0	0
TDRs placed on nonaccrual status	0	0	0	0
Ending balance	$ 0	0	$ 0	0
Total TDRs		$ 8,215		$ 8,215

Financing Receivable Modifications Recorded Investments

No definition available.

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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

Financing Receivables Impaired Troubled Debt Restructuring Additions

+ References

No definition available.

+ Details

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- Definition

Financing Receivables Impaired Troubled Debt Restructuring Payments

+ 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.

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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 https://asc.fasb.org/extlink&oid=123577603&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 https://asc.fasb.org/extlink&oid=121585226&loc=d3e18845-111554

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- Definition

Reflects the amount of the write-down related to a troubled debt restructuring.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 4
-URI https://asc.fasb.org/extlink&oid=121585226&loc=d3e18845-111554

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