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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding.

+ References

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- Definition

Weighted average remaining contractual term of exercisable stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (e)(2)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(i)-(ii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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STOCK-BASED COMPENSATION (Details 2) (USD $)	12 Months Ended
STOCK-BASED COMPENSATION (Details 2) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Exercisable Stock Options [Line Items]
Number of Shares Outstanding	69,375
Weighted Average Remaining Contractual Life	6 years 11 months 23 days
Number Of Shares Exercisable	46,775	46,775	39,201	29,199
Plan One [Member]
Exercisable Stock Options [Line Items]
Exercise Price	26.75
Number of Shares Outstanding	1,000
Weighted Average Remaining Contractual Life	1 year
Number Of Shares Exercisable	1,000
Plan Two [Member]
Exercisable Stock Options [Line Items]
Exercise Price	12.30
Number of Shares Outstanding	12,250
Weighted Average Remaining Contractual Life	4 years 7 months 13 days
Number Of Shares Exercisable	12,250
Plan Three [Member]
Exercisable Stock Options [Line Items]
Exercise Price	13.25
Number of Shares Outstanding	10,700
Weighted Average Remaining Contractual Life	5 years 7 months 13 days
Number Of Shares Exercisable	10,700
Plan Four [Member]
Exercisable Stock Options [Line Items]
Exercise Price	17.40
Number of Shares Outstanding	9,800
Weighted Average Remaining Contractual Life	6 years 7 months 13 days
Number Of Shares Exercisable	9,800
Plan Five [Member]
Exercisable Stock Options [Line Items]
Exercise Price	19.28
Number of Shares Outstanding	14,675
Weighted Average Remaining Contractual Life	7 years 6 months 11 days
Number Of Shares Exercisable	9,709
Plan Six [Member]
Exercisable Stock Options [Line Items]
Exercise Price	21.35
Number of Shares Outstanding	9,950
Weighted Average Remaining Contractual Life	8 years 7 months 10 days
Number Of Shares Exercisable	3,316
Plan Seven [Member]
Exercisable Stock Options [Line Items]
Exercise Price	24.47
Number of Shares Outstanding	11,000
Weighted Average Remaining Contractual Life	9 years 7 months 17 days
Number Of Shares Exercisable	0