FAIR VALUE OF FINANCIAL ASSETS AND LIABILITIES (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
States and political subdivisions debt securities
Changes in Level 3 assets and liabilities measured at fair value on a recurring basis
Aggregate fair value / Balance at the beginning of the period	$ 13,095	$ 10,518
Principal payments received	(735)	(71)
Purchases		1,042
Unrealized net gain included in other comprehensive income	287	299
Aggregate fair value / Balance at the end of the period	12,647	11,788
Mortgage revenue bonds
Changes in Level 3 assets and liabilities measured at fair value on a recurring basis
Aggregate fair value / Balance at the end of the period	$ 12,600	$ 11,800
Additional disclosures
Number of investment securities held	4	4
Mortgage revenue bonds \| Weighted average
Additional disclosures
Discount rate (as a percent)	4.14%

Represents the number of investment securities held by the entity at the reporting date.

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- Definition

Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

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Amount of gain (loss) recognized in other comprehensive income (loss) for financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

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Amount of purchases, (sales), issuances and (settlements) of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

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-Section 50

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Amount of settlement of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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