INVESTMENT SECURITIES - Amortized cost and approximate fair values of securities (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 132,929	$ 127,773
Gross Unrealized Gains	2,781	2,244
Gross Unrealized Losses	(590)	(1,132)
Fair Value	135,120us-gaap_AvailableForSaleSecurities	128,885us-gaap_AvailableForSaleSecurities
Federal agencies
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	31,835	31,894
Gross Unrealized Gains	261	147
Gross Unrealized Losses	(78)	(419)
Fair Value	32,018	31,622
State and municipal
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	43,018	40,710
Gross Unrealized Gains	1,752	1,537
Gross Unrealized Losses	(39)	(47)
Fair Value	44,731	42,200
Government-sponsored enterprise (GSE) residential mortgage-backed and other asset-backed agency securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	54,451	51,533
Gross Unrealized Gains	764	558
Gross Unrealized Losses	(138)	(350)
Fair Value	55,077	51,741
Corporate
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	3,625	3,636
Gross Unrealized Gains	4	2
Gross Unrealized Losses	(335)	(316)
Fair Value	$ 3,294	$ 3,322

Amount of accumulated pre-tax unrealized gains before deducting pre-tax unrealized losses on investments in available-for-sale securities impacting investments.

No definition available.

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- Definition

Amount of accumulated pre-tax unrealized loss before deducting pre-tax unrealized gain on investments in available-for-sale securities impacting investments.

+ References

No definition available.

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- Definition

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 25

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 5

-Subparagraph (aa)

-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26610-111562

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- Definition

This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.2)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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