STOCKHOLDERS' EQUITY (Details 3) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Securities authorized for issuance under compensation plans
Number of Shares Authorized for Issuance under plan	13,925,000
Number of securities to be issued upon exercise of outstanding options and restricted stock (in shares)	3,388,707
Weighted-average exercise price of outstanding options and restricted stock (in dollars per share)	$ 2.65
Weighted-average exercise price of outstanding options and restricted stock (in dollars per share)	$ 2.27
Number of securities remaining available for future issuance under equity compensation plans (in shares)	3,907,296
Incentive options
Outstanding at the end of the period (in shares)	1,490,574
Weighted Average Exercise Price
Outstanding at the end of the period (in dollars per share)	$ 2.65
Weighted-average exercise price of outstanding options and restricted stock (in dollars per share)	$ 2.27
Exercise Price $2.75
Compensation plan
Exercise Price (in dollars per share)	$ 2.75
Exercise price $3.04
Compensation plan
Exercise Price (in dollars per share)	$ 3.04
Exercise price $2.74
Compensation plan
Exercise Price (in dollars per share)		$ 2.74
Exercise price $3.21
Compensation plan
Exercise Price (in dollars per share)		$ 3.21
Exercise price $2.22
Compensation plan
Exercise Price (in dollars per share)			$ 2.22
Exercise Price $4.51
Compensation plan
Exercise Price (in dollars per share)			$ 4.51
Stock options
Securities authorized for issuance under compensation plans
Weighted-average exercise price of outstanding options and restricted stock (in dollars per share)	$ 2.65	$ 2.48	$ 3.89
Compensation plan
Exercisable period	5 years
Vesting period	3 years
Incentive options
Outstanding at the beginning of the period (in shares)	1,989,309	3,092,985	3,541,703
Issued (in shares)	652,322	269,000	143,000
Exercised (in shares)	(823,331)	(658,510)	(155,935)
Expired (in shares)	(150,750)	(405,666)	(365,750)
Forfeited (in shares)	(176,976)	(308,500)	(70,033)
Outstanding at the end of the period (in shares)	1,490,574	1,989,309	3,092,985
Weighted Average Exercise Price
Outstanding at the beginning of the period (in dollars per share)	$ 2.48	$ 3.89	$ 4.80
Issued (in dollars per share)	$ 2.88	$ 2.80	$ 3.92
Exercise price (in dollars per share)	$ 0.86	$ 1.27	$ 0.79
Expired (in dollars per share)	$ 11.30	$ 11.08	$ 13.67
Forfeited (in dollars per share)	$ 3.03	$ 8.17	$ 5.50
Outstanding at the end of the period (in dollars per share)	$ 2.65	$ 2.48	$ 3.89
Stock options | Minimum
Weighted Average Exercise Price
Exercise price (in dollars per share)	$ 0.51	$ 0.51	$ 0.51
Stock options | Maximum
Weighted Average Exercise Price
Exercise price (in dollars per share)	$ 3.07	$ 2.42	$ 2.42
Restricted Shares
Compensation plan
Granted (in shares)	886,331	1,405,965	662,562
2000 Equity Incentive Plan
Securities authorized for issuance under compensation plans
Number of Shares Authorized for Issuance under plan	1,975,000
Number of securities to be issued upon exercise of outstanding options and restricted stock (in shares)	363,848
Weighted-average exercise price of outstanding options and restricted stock (in dollars per share)	$ 2.42
Number of securities remaining available for future issuance under equity compensation plans (in shares)	0
Weighted Average Exercise Price
Weighted-average exercise price of outstanding options and restricted stock (in dollars per share)	$ 2.42
2001 Stock Incentive Plan
Securities authorized for issuance under compensation plans
Number of Shares Authorized for Issuance under plan	2,500,000
Number of securities to be issued upon exercise of outstanding options and restricted stock (in shares)	6,000
Weighted-average exercise price of outstanding options and restricted stock (in dollars per share)	$ 2.06
Number of securities remaining available for future issuance under equity compensation plans (in shares)	0
Weighted Average Exercise Price
Weighted-average exercise price of outstanding options and restricted stock (in dollars per share)	$ 2.06
2001 Key Employee Stock Incentive Plan
Securities authorized for issuance under compensation plans
Number of Shares Authorized for Issuance under plan	2,500,000
Number of securities to be issued upon exercise of outstanding options and restricted stock (in shares)	219,321
Weighted-average exercise price of outstanding options and restricted stock (in dollars per share)	$ 1.75
Number of securities remaining available for future issuance under equity compensation plans (in shares)	0
Weighted Average Exercise Price
Weighted-average exercise price of outstanding options and restricted stock (in dollars per share)	$ 1.75
2010 Stock Incentive Plan
Securities authorized for issuance under compensation plans
Number of Shares Authorized for Issuance under plan	6,950,000
Number of securities to be issued upon exercise of outstanding options and restricted stock (in shares)	2,799,538
Weighted-average exercise price of outstanding options and restricted stock (in dollars per share)	$ 2.29
Number of securities remaining available for future issuance under equity compensation plans (in shares)	3,907,296
Weighted Average Exercise Price
Weighted-average exercise price of outstanding options and restricted stock (in dollars per share)	$ 2.29