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Loans and Leases Receivable and Allowance for Credit Losses on Loans and Leases - Analysis of Loans Modified in Troubled Debt Restructuring by Type of Concession (Detail) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2022 USD ($) loan	Jun. 30, 2022 USD ($) loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans | loan	71	113
Recorded investment | $	$ 867	$ 1,664
Interest-rate reductions
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans | loan	4	14
Recorded investment | $	$ 124	$ 470
Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans | loan	67	99
Recorded investment | $	$ 743	$ 1,194

X

- Definition

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+ References

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-Topic 310
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-Name Accounting Standards Codification
-Section 50
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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Number of financing receivables that have been modified by troubled debt restructurings.

+ References

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-Topic 310
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Amortized cost of financing receivable modified during period for debtor experiencing financial difficulty.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
-Section 50
-Paragraph 42
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