6. ACCOUNTING FOR EMPLOYEE STOCK-BASED COMPENSATION (Details 2) (Stock Options [Member], USD $)	6 Months Ended
	Jun. 30, 2013
Stock Options [Member]
Share Based Activity
Outstanding at January 1, 2013	850,701
Granted	11,000
Exercised	(3,581)
Forfeited, expired or cancelled	(70,711)
Outstanding at June 30, 2013	787,409
Vested and expected to vest at June 30, 2013	744,966
Exercisable at June 30, 2013	571,045
Weighted Average Exercise Price
Beginning Balance, January 1, 2013	$ 5.88
Granted	$ 1.65
Exercised	$ 1.82
Forfeited, expired or cancelled	$ 6.96
Ending Balance, June 30, 2013	$ 5.74
Vested and expected to vest at June 30, 2013	$ 5.83
Exercisable at June 30, 2013	$ 6.30
Weighted Average Remaining Contractual Term (Years)
Outstanding at June 30, 2013	5 years 8 months 12 days
Vested and expected to vest by at June 30, 2013	5 years 6 months 25 days
Exerciseable at the June 30, 2013	4 years 7 months 13 days
Aggregate intrinsic value
Outstanding at June 30, 2013	$ 2,152
Vested and expected to vest at June 30, 2013	564
Exercisable at the June 30, 2013