EQUITY (Tables)

3 Months Ended

Mar. 31, 2017

EQUITY

Summary of Changes in Shareholders' Equity

				Additional				Total
	Common Stock			Paid- In		Accumulated		Shareholders’
	Shares		Amount	Capital		Deficit		Equity (Deficit)
Balance, December 31, 2016	29,364,100	$	29	$	358,063	$	(223,184)	$	134,908
Exercise of common stock options	20,653		—		94		—		94
Issuance for employee stock purchase plan	66,785		—		673		—		673
Vesting of restricted stock units	10,435		—		—		—		—
Shares withheld for employee taxes upon vesting of restricted stock units	(3,416)		—		(51)		—		(51)
Stock-based compensation	—		—		1,821		—		1,821
Net loss	—		—		—		(23,078)		(23,078)
Balance, March 31, 2017	29,458,557	$	29	$	360,600	$	(246,262)	$	114,367