STOCK-BASED COMPENSATION - Stock Option Activity (Details 1) - Stock Options $ / shares in Units, $ in Thousands	9 Months Ended
Sep. 30, 2015 USD ($) $ / shares shares
Shares
Outstanding, December 31, 2014 \| shares	85,835
Granted \| shares
Exercised \| shares	(16,965)
Forfeited \| shares
Outstanding, September 30, 2015 \| shares	68,870
Exercisable, September 30, 2015 \| shares	26,785
Weighted Average Exercise price/Share
Outstanding, December 31, 2014	$ 15.65
Granted
Exercised	$ 15.65
Forfeited
Outstanding, September 30, 2015	$ 15.65
Exercisable, September 30, 2015	$ 15.65
Weighted Average Remaining Contractual Life (in years)
Outstanding, September 30, 2015	6 years 6 months
Exercisable, September 30, 2015	6 years 6 months
Aggregate Intrinsic Value
Outstanding, September 30, 2015 \| $	$ 586,084
Exercisable, September 30, 2015 \| $	$ 227,940

Share-based Compensation Arrangement by Share-based Payment Award, Options, Aggregate Intrinsic Value [Abstract]

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Share-based Compensation Arrangement by Share-based Payment Award, Options, Weighted Average Remaining Contractual Term [Abstract]

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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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-Publisher FASB

-Name Accounting Standards Codification

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

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

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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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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Amount by which the current fair value of the underlying stock exceeds the exercise price of fully vested and expected to vest options outstanding.

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

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