Loans and Leases and Other Real Estate - Summary of Restructured Loans (Detail) $ in Thousands	12 Months Ended
Dec. 31, 2018 USD ($) Contract	Dec. 31, 2017 USD ($) Contract
Financing Receivable, Modifications [Line Items]
Number of Contracts \| Contract	7	16
Pre- Modification Outstanding Recorded Investment	$ 4,313	$ 4,807
Post- Modification Outstanding Recorded Investment	$ 4,313	$ 4,807
Commercial, secured by real estate
Financing Receivable, Modifications [Line Items]
Number of Contracts \| Contract	5	8
Pre- Modification Outstanding Recorded Investment	$ 3,348	$ 4,618
Post- Modification Outstanding Recorded Investment	$ 3,348	$ 4,618
Commercial, industrial and other
Financing Receivable, Modifications [Line Items]
Number of Contracts \| Contract	1	2
Pre- Modification Outstanding Recorded Investment	$ 950	$ 124
Post- Modification Outstanding Recorded Investment	$ 950	$ 124
Leases
Financing Receivable, Modifications [Line Items]
Number of Contracts \| Contract	1	6
Pre- Modification Outstanding Recorded Investment	$ 15	$ 65
Post- Modification Outstanding Recorded Investment	$ 15	$ 65

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953676-111524

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Post-modification amount of investment in financing receivables modified by troubled debt restructurings.

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Pre-modification amount of investment in financing receivables modified by troubled debt restructurings.

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