STOCK BASED COMPENSATION (Tables)

3 Months Ended

Mar. 31, 2013

STOCK BASED COMPENSATION [Abstract]

Weighted-Average Assumptions Used in Estimating Grant Date Fair Value of Stock Options Granted

Set forth below are the grant-date fair values, along with the weighted-average assumptions used in estimating those grant-date fair values, for the stock options granted during the three month periods ended March 31, 2013 and 2012:

	Three months ended March 31,
	2013			2012
Expected volatility		68.2	%		85.2	%
Expected life (in years)		4.00			4.00
Risk-free interest rate		0.84	%		0.84	%
Dividend yield		0.00	%		0.00	%
Fair value per stock option	$	6.56		$	7.88
Forfeiture rate		8	%		8	%

Share Based Compensation Plan Activity

The table below sets forth a summary of activity within the Company's stock-based compensation plans for the quarter ended March 31, 2013:  

	Number of Options (in thousands)			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)		Aggregate Intrinsic Value
Outstanding at December 31, 2012		9,727		$	4.22		2.55	$	88,918,000
Granted		36			12.77
Exercised		(177	)		1.62
Forfeited		(6	)		10.41
Outstanding at March 31, 2013		9,580		$	4.30		2.33	$	91,304,000
Exercisable at March 31, 2013		6,226		$	2.50		1.86	$	70,514,000

Non Vested Restricted Stock Activity

The following is a summary of non-vested restricted stock activity:

	Number of Shares		Weighted Average
	(in thousands)		Grant Date Fair Value
Non-vested at December 31, 2012		18	$	14.63
Granted		—		—
Forfeited		—		—
Vested		—		—
Non-vested at March 31, 2013		18	$	14.63