Loans and Leases (Information on How Loans and Leases were Modified as a TDR) (Detail) $ in Thousands	3 Months Ended
Mar. 31, 2022 USD ($) loan	Mar. 31, 2021 USD ($) loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts \| loan	30	26
Recorded Investment \| $	$ 4,461	$ 2,644
Commercial \| Extended maturity \| Commercial non-mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts \| loan	2	6
Recorded Investment \| $	$ 98	$ 507
Commercial \| Extended maturity \| Commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts \| loan	0	1
Recorded Investment \| $	$ 0	$ 183
Commercial \| Maturity/rate combined \| Commercial non-mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts \| loan	2	1
Recorded Investment \| $	$ 92	$ 37
Commercial \| Other \| Commercial non-mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts \| loan	0	2
Recorded Investment \| $	$ 0	$ 113
Consumer \| Extended maturity \| Residential
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts \| loan	0	1
Recorded Investment \| $	$ 0	$ 99
Consumer \| Extended maturity \| Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts \| loan	0	1
Recorded Investment \| $	$ 0	$ 28
Consumer \| Maturity/rate combined \| Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts \| loan	4	5
Recorded Investment \| $	$ 44	$ 1,011
Consumer \| Other \| Residential
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts \| loan	5	2
Recorded Investment \| $	$ 2,985	$ 233
Consumer \| Other \| Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts \| loan	17	7
Recorded Investment \| $	$ 1,242	$ 433

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No definition available.

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Number of financing receivables that have been modified by troubled debt restructurings.

+ 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=123577603&loc=SL6953676-111524

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Amount, after troubled debt restructuring, of modified financing receivable.

+ References

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