EQUITY INSTRUMENTS (Schedule of Share Based Compensation Stock Options Activity) (Details) (Stock Option [Member], USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Stock Option [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock options outstanding, beginning of period (in Shares)	794	634	336
Stock options granted (in Shares)	179	536	305
Stock options exercised (in Shares)	(32)	(1)	(7)
Stock options forfeited (in Shares)	(49)	(375)
Stock options outstanding, end of period (in Shares)	892	794	634
Stock options exercisable (vested) (in Shares)	248
Stock options expected to vest (in Shares)	874
Weighted average price per share, stock options outstanding (in Dollars per Share)	$ 8.91	$ 11.92	$ 14.43
Weighted average price per share, stock options granted (in Dollars per Share)	$ 14.95	$ 8.68	$ 8.92
Weighted average price per share, stock options exercised (in Dollars per Share)	$ 9.60	$ 0.58	$ 1.46
Weighted average price per share, stock options forfeited (in Dollars per Share)	$ 11.16	$ 13.70
Weighted average price per share, stock options outstanding (in Dollars per Share)	$ 9.97	$ 8.91	$ 11.92
Weighted average price per share, stock options exercisable (vested) (in Dollars per Share)	$ 9.36
Weighted average price per share, stock options expected to vest (in Dollars per Share)	$ 9.96
Weighted average remaining contractual life stock options outstanding (in Duration)	5 years 2 months 23 days
Weighted average remaining contractual life, stock options exercisable (vested) (in Duration)	4 years 9 months 11 days
Weighted average remaining contractual life, stock options expected to vest (in Duration)	5 years 2 months 23 days
Aggregate intrinsic value, stock options outstanding	$ 8,625
Aggregate intrinsic value, stock options exercisable (vested)	2,610
Aggregate intrinsic value, stock options expected to vest	$ 8,465

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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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.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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

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For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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Weighted average price of options that were either forfeited or expired.

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Gross number of share options (or share units) granted during the period.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of fully vested and expected to vest options that are exercisable.

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As of the balance sheet date, the weighted-average exercise price (at which grantees can acquire the shares reserved for issuance) for exercisable stock options that are fully vested or expected to vest.

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As of the balance sheet date, the number of shares into which fully vested and expected to vest stock options outstanding can be converted under the option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Number of share options (or share units) exercised during the current period.

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