4. STOCKHOLDERS' EQUITY (Details 1) (USD $)	6 Months Ended
	Jun. 30, 2013
Shares
Outstanding at beginning of period	749,211
Granted	25,587
Outstanding at end of period and expected to vest	774,798
Options exercisable	306,530
Weighted Average Exercise Price
Outstanding at beginning of period	$ 6.86
Granted	$ 7.56
Outstanding at end of period and expected to vest	$ 6.89
Options exercisable	$ 5.87