SHAREHOLDERS' EQUITY (Schedule of Shares Authorized Under Stock Option Plans by Exercise Price Range) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2014
Outstanding
Number outstanding	1,889
Weighted average remaining contractual life (years)	3 years 11 months 19 days
Weighted average exercise price	$ 6.53
Exercisable
Number exercisable	897
Weighted average remaining contractual life (years)	2 years 5 months 8 days
Weighted average exercise price	$ 3.22
$0.48 - $1.52 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, minimum	$ 0.48
Exercise price, maximum	$ 1.52
Outstanding
Number outstanding	237
Weighted average remaining contractual life (years)	10 months 6 days
Weighted average exercise price	$ 1.16
Exercisable
Number exercisable	237
Weighted average remaining contractual life (years)	10 months 6 days
Weighted average exercise price	$ 1.16
$2.00 - $3.44 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, minimum	$ 2.00
Exercise price, maximum	$ 3.44
Outstanding
Number outstanding	556
Weighted average remaining contractual life (years)	2 years 8 months 8 days
Weighted average exercise price	$ 2.86
Exercisable
Number exercisable	538
Weighted average remaining contractual life (years)	2 years 8 months 1 day
Weighted average exercise price	$ 2.85
$5.68 - $7.81 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, minimum	$ 5.68
Exercise price, maximum	$ 7.81
Outstanding
Number outstanding	205
Weighted average remaining contractual life (years)	5 years 4 months 2 days
Weighted average exercise price	$ 6.87
Exercisable
Number exercisable	15
Weighted average remaining contractual life (years)	4 years 3 months 18 days
Weighted average exercise price	$ 6.03
$8.04 - $9.87 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, minimum	$ 8.04
Exercise price, maximum	$ 9.87
Outstanding
Number outstanding	378
Weighted average remaining contractual life (years)	5 years 3 months 18 days
Weighted average exercise price	$ 9.14
Exercisable
Number exercisable	74
Weighted average remaining contractual life (years)	4 years 4 months 28 days
Weighted average exercise price	$ 8.72
$10.03 - $11.32 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price, minimum	$ 10.03
Exercise price, maximum	$ 11.32
Outstanding
Number outstanding	513
Weighted average remaining contractual life (years)	5 years 3 months 11 days
Weighted average exercise price	$ 10.95
Exercisable
Number exercisable	33
Weighted average remaining contractual life (years)	4 years 11 months 1 day
Weighted average exercise price	$ 10.37

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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

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

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iii)

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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

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- Definition

The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ 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 (g)

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- Definition

The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied.

+ 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)(iii)

-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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- Definition

The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are 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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- Definition

Weighted average remaining contractual term of outstanding 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)(1)

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

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The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ 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 (g)

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

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