STOCK-BASED COMPENSATION (Details 2) (Stock Options, USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012 Y	Jun. 30, 2011	Jun. 30, 2012 Y	Jun. 30, 2011 Y
Stock Options
Vesting period, minimum (in years)			P3Y
Vesting period, maximum (in years)			P4Y
Summary of stock option activity
Outstanding at beginning of period (in shares)			945,080
Exercised (in shares)			(135,898)
Forfeited (in shares)			(84,698)
Outstanding at end of period (in shares)	724,484		724,484
Vested or expected to vest at end of period (in shares)	722,811		722,811
Exercisable at end of period (in shares)	707,750		707,750
Outstanding at beginning of period, weighted average exercise price (in dollars per share)			$ 27.19
Exercised, weighted average exercise price (in dollars per share)	$ 16.18		$ 16.18
Forfeited, weighted average exercise price (in dollars per share)			$ 35.92
Outstanding at end of period, weighted average exercise price (in dollars per share)	$ 28.23		$ 28.23
Vested or expected to vest at end of period, weighted average exercise price (in dollars per share)	$ 28.28		$ 28.28
Exercisable at end of period, weighted average exercise price (in dollars per share)	$ 28.71		$ 28.71
Outstanding at end of period, weighted average remaining term (in years)	1.92		1.92
Vested or expected to vest at end of period, weighted average remaining term (in years)			1.92
Exercisable at end of period, weighted average remaining term (in years)			1.88
Outstanding at end of period, aggregate intrinsic value	$ 1,278		$ 1,278
Vested or expected to vest at end of period, aggregate intrinsic value	1,252		1,252
Exercisable at end of period, aggregate intrinsic value	1,018		1,018
Summary of unvested stock option activity
Unvested options at beginning of period, weighted average grant date fair value (in shares)			186,914
Vested, weighted average grant date fair value (in shares)			(161,526)
Forfeited, weighted average grant date fair value (in shares)			(8,654)
Unvested options at end of period, weighted average grant date fair value (in shares)	16,734		16,734
Unvested options at beginning of period (in dollars per share)			$ 4.77
Granted (in dollars per share)				$ 13.21	[1]
Vested (in dollars per share)			$ 4.47
Forfeited (in dollars per share)			$ 13.21
Unvested options at ending of period (in dollars per share)	$ 3.26		$ 3.26
Fair value assumptions under the Black-Scholes option pricing model
Fair value assumptions, method used			Black-Scholes option-pricing model
Expected term (in years)				4	[2]
Expected volatility (as a percent)				78.10%	[3]
Expected dividend yield (as a percent)				0.20%	[4]
Risk-free interest rate (as a percent)				1.60%	[5]
Share based compensation plan, additional disclosures
Weighted average grant date fair value of stock options granted during the period (in dollars per share)				$ 13.21	[1]
Total intrinsic value of options exercised	280	855	855	2,052
Total fair value of options vested	671	119	3,672	1,263
Total unrecognized stock compensation expense	$ 55		$ 55
Weighted average period to recognize unrecognized compensation cost (in years)			1.1
Maximum
Stock Options
Contractual term of stock option grants (in years)			P10Y
Minimum
Stock Options
Contractual term of stock option grants (in years)			P7Y

[1] The Company did not issue any stock options during the three and six months ended June 30, 2012 and the three months ended June 30, 2011.

[2] The expected term (estimated period of time outstanding) of stock options granted was estimated using the historical exercise behavior of employees.

[3] The expected volatility was based on historical volatility for a period equal to the stock option's expected term.

[4] The expected dividend yield is based on the Company's prevailing dividend rate at the time of grant.

[5] The risk-free rate is based on the U.S. Treasury strips in effect at the time of grant equal to the stock option's expected term.