STOCKHOLDERS' EQUITY (Details) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended		12 Months Ended
	Mar. 28, 2017	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2017	Jan. 01, 2017	Jan. 03, 2016	Apr. 26, 2017	Apr. 25, 2017	Dec. 06, 2016
Class of Warrant or Right [Line Items]
Shares of common stock authorized to issue (in shares)				200,000,000	100,000,000		200,000,000	100,000,000
Shares of authorized but unissued undesignated preferred stock (in shares)				10,000,000	10,000,000
Dollar amount of offerings (up to)									$ 40,000
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001		$ 0.001	$ 0.001
Underwritten public offering price (in dollars per share)	$ 1.50	$ 1.50	$ 1.00	$ 1.74
Proceeds from issuance of common stock	$ 15,200	$ 15,200	$ 8,800	$ 17,550	$ 10,603	$ 692
Warrants outstanding (in warrants)				2,300,000
June 2012 Financing
Class of Warrant or Right [Line Items]
Strike price (in dollars per share)				$ 2.98
Common Stock at Par Value
Class of Warrant or Right [Line Items]
Issuance of common stock (in shares)	11,300,000.0	11,300,000.0	10,000,000.0