STOCKHOLDERS' EQUITY (Details) (USD $) In Millions, except Share data, unless otherwise specified	0 Months Ended	9 Months Ended
	Aug. 22, 2013	Sep. 30, 2013	Jun. 11, 2013	May 08, 2013	Dec. 31, 2012
STOCKHOLDERS' EQUITY
Number of shares authorized to be issued		200,000,000
Common Stock
Common stock, shares authorized		190,000,000			190,000,000
Common stock, par value (in dollars per share)		$ 0.00005			$ 0.00005
Common stock, shares issued		22,649,853			21,951,000
Common stock, shares outstanding		22,649,853			21,951,000
Preferred stock
Preferred stock, shares authorized		10,000,000			10,000,000
Preferred stock, par value (in dollars per share)		$ 0.001			$ 0.001
Shelf registration statement, number of shares sold			3,490,000
Shelf registration statement, offering price			$ 16.00
Shelf registration statement, amount of equity or debt issue				$ 150.0
Shelf registration statement, additional shares issued and sold			10,000
Share repurchase program
Share repurchase program, number of shares authorized to repurchase	$ 25
Shares repurchased under the share repurchase program		0