EMPLOYEE BENEFIT PLANS - Transactions involving Marine Products stock options (Details) (Stock Options, USD $)	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011
Stock Options
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Outstanding [Roll Forward]
Outstanding at January 1, 2012	564,735
Granted
Exercised	(410,293)
Forfeited
Expired	(9,827)
Outstanding and exercisable at December 31, 2012	144,615	564,735
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Outstanding at January 1, 2012	$ 4.08
Granted
Exercised	$ 3.14
Forfeited
Expired	$ 2.67
Outstanding and exercisable at December 31, 2012	$ 6.82	$ 4.08
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Remaining Contractual Life [Roll Forward]
Outstanding	0.44 years	0.6 years
Aggregate Intrinsic Value

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Weighted average remaining contractual term for option awards outstanding.

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Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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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.

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

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

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The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including 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 price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average price at which grantees can acquire the shares reserved for issuance on stock options awarded.

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