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Effect of Derivative and Hedging Activity, on Consolidated Statements of Income (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Derivatives designated as hedges
Derivative, Gain (Loss) on Derivative, Net	$ 31	$ 33	$ 86	$ 91
Interest Rate Swaps Agreement | Designated as Hedging Instrument | Interest And Fee
Derivatives designated as hedges
Derivative, Gain (Loss) on Derivative, Net	$ 31	$ 33	$ 86	$ 91

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- Definition

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5618551-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (a),(c),(d),(e)
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959

+ Details

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- References

No definition available.

+ Details

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- Details

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- Details

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- Details

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