INVESTMENTS (Gross Unrealized Losses and Fair Value by Length of Time for Held-To-Maturity Securities) (Detail) $ in Thousands	Dec. 31, 2015 USD ($) Securities	Dec. 31, 2014 USD ($) Securities
Schedule Of Held To Maturity Securities [Line Items]
Fair Value	$ 68,096	$ 94,805
Less than 12 months	479	18
More than 12 months	402	2,041
Total Unrealized Losses	$ 881	$ 2,059
Held-to-Maturity Securities
Schedule Of Held To Maturity Securities [Line Items]
Number of securities \| Securities	17	49
Fair Value	$ 881	$ 2,059
U.S. government agencies
Schedule Of Held To Maturity Securities [Line Items]
Fair Value	55,727	62,778
Less than 12 months	456	0
More than 12 months	277	1,734
Total Unrealized Losses	$ 733	$ 1,734
U.S. government agencies \| Held-to-Maturity Securities
Schedule Of Held To Maturity Securities [Line Items]
Number of securities \| Securities	6	8
Fair Value	$ 733	$ 1,734
State and municipal
Schedule Of Held To Maturity Securities [Line Items]
Fair Value	12,369	32,027
Less than 12 months	23	18
More than 12 months	125	307
Total Unrealized Losses	$ 148	$ 325
State and municipal \| Held-to-Maturity Securities
Schedule Of Held To Maturity Securities [Line Items]
Number of securities \| Securities	11	41
Fair Value	$ 148	$ 325

Number Of Securities

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- Definition

Amount of accumulated unrealized loss on investments in debt securities classified as held-to-maturity that have been in a continuous loss position for twelve months or longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27337-111563

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563

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Amount of accumulated unrealized loss on investments in debt securities classified as held-to-maturity in a continuous loss position.

+ References

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This item represents the fair value of securities categorized as held-to-maturity which are in an unrealized loss position.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563

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Amount of accumulated unrealized loss on investments in debt securities classified as held-to-maturity that have been in a continuous loss position for less than twelve months.

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