Loans - Pre-Modification and Post-Modification (Detail) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2017 USD ($) Contract	Sep. 30, 2016 USD ($) Contract	Sep. 30, 2017 USD ($) Contract	Sep. 30, 2016 USD ($) Contract
Troubled Debt Restructurings
Number of Contracts (in contract) \| Contract	18	12	77	28
Pre-Modification Outstanding Recorded Investment	$ 19,642	$ 10,235	$ 83,846	$ 24,481
Post-Modification Outstanding Recorded Investment	$ 18,766	$ 10,291	$ 78,400	$ 23,680
Commercial and industrial
Troubled Debt Restructurings
Number of Contracts (in contract) \| Contract	10	7	61	12
Pre-Modification Outstanding Recorded Investment	$ 12,522	$ 6,389	$ 57,338	$ 11,700
Post-Modification Outstanding Recorded Investment	$ 11,655	$ 6,248	$ 52,694	$ 11,088
Commercial real estate
Troubled Debt Restructurings
Number of Contracts (in contract) \| Contract	6	3	10	6
Pre-Modification Outstanding Recorded Investment	$ 6,559	$ 3,745	$ 24,994	$ 10,404
Post-Modification Outstanding Recorded Investment	$ 6,554	$ 3,948	$ 24,211	$ 10,252
Commercial real estate \| Commercial real estate
Troubled Debt Restructurings
Number of Contracts (in contract) \| Contract	4	1	7	4
Pre-Modification Outstanding Recorded Investment	$ 5,931	$ 1,667	$ 23,806	$ 8,325
Post-Modification Outstanding Recorded Investment	$ 5,929	$ 1,870	$ 23,217	$ 8,174
Commercial real estate \| Construction
Troubled Debt Restructurings
Number of Contracts (in contract) \| Contract	2	2	3	2
Pre-Modification Outstanding Recorded Investment	$ 628	$ 2,078	$ 1,188	$ 2,079
Post-Modification Outstanding Recorded Investment	$ 625	$ 2,078	$ 994	$ 2,078
Residential mortgage
Troubled Debt Restructurings
Number of Contracts (in contract) \| Contract	2	1	6	8
Pre-Modification Outstanding Recorded Investment	$ 561	$ 78	$ 1,514	$ 2,300
Post-Modification Outstanding Recorded Investment	$ 557	$ 77	$ 1,495	$ 2,271
Consumer
Troubled Debt Restructurings
Number of Contracts (in contract) \| Contract	0	1	0	2
Pre-Modification Outstanding Recorded Investment	$ 0	$ 23	$ 0	$ 77
Post-Modification Outstanding Recorded Investment	$ 0	$ 18	$ 0	$ 69

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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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