Loans - Pre-Modification and Post-Modification (Detail) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2017 USD ($) Contract	Jun. 30, 2016 USD ($) Contract	Jun. 30, 2017 USD ($) Contract	Jun. 30, 2016 USD ($) Contract
Troubled Debt Restructurings
Number of Contracts (in contract) \| Contract	54	11	65	17
Pre-Modification Outstanding Recorded Investment	$ 64,230	$ 13,020	$ 71,827	$ 15,391
Post-Modification Outstanding Recorded Investment	$ 62,516	$ 11,997	$ 69,084	$ 14,084
Commercial and industrial
Troubled Debt Restructurings
Number of Contracts (in contract) \| Contract	47	4	53	6
Pre-Modification Outstanding Recorded Investment	$ 40,077	$ 5,079	$ 46,315	$ 6,456
Post-Modification Outstanding Recorded Investment	$ 38,367	$ 4,094	$ 43,660	$ 5,437
Commercial Real Estate
Troubled Debt Restructurings
Number of Contracts (in contract) \| Contract	5	2	7	3
Pre-Modification Outstanding Recorded Investment	$ 23,604	$ 6,111	$ 24,342	$ 6,658
Post-Modification Outstanding Recorded Investment	$ 23,604	$ 6,077	$ 24,257	$ 6,388
Commercial Real Estate \| Commercial real estate
Troubled Debt Restructurings
Number of Contracts (in contract) \| Contract	5	2	6	3
Pre-Modification Outstanding Recorded Investment	$ 23,604	$ 6,111	$ 23,782	$ 6,658
Post-Modification Outstanding Recorded Investment	$ 23,604	$ 6,077	$ 23,777	$ 6,388
Commercial Real Estate \| Construction
Troubled Debt Restructurings
Number of Contracts (in contract) \| Contract	0	0	1	0
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 560	$ 0
Post-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 480	$ 0
Residential mortgage
Troubled Debt Restructurings
Number of Contracts (in contract) \| Contract	2	5	5	7
Pre-Modification Outstanding Recorded Investment	$ 549	$ 1,830	$ 1,170	$ 2,222
Post-Modification Outstanding Recorded Investment	$ 545	$ 1,826	$ 1,167	$ 2,206
Consumer
Troubled Debt Restructurings
Number of Contracts (in contract) \| Contract			0	1
Pre-Modification Outstanding Recorded Investment			$ 0	$ 55
Post-Modification Outstanding Recorded Investment			$ 0	$ 53

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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=66008989&loc=SL6953676-111524

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