5. SHAREHOLDERS' EQUITY (Details) - 6 months ended Jun. 30, 2015 - USD ($) $ in Thousands	Total
Equity [Abstract]
Number of shares issued, beginning	47,707,216
Shares issued amount, beginning	$ 100,652
Exercise of stock options - fair value, shares	2,852
Exercise of stock options - fair value, amount	$ 1
Shares issued, shares	5,233,622
Shares issued, amount	$ 2,986
Number of shares issued, ending	52,940,838
Shares issued amount, ending	$ 103,638