CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares shares in Thousands	Sep. 30, 2018	Dec. 31, 2017
Preferred Stock, par value	$ 0.001	$ 0.001
Preferred Stock, shares authorized	10,000	10,000
Preferred Stock, shares issued	0	0
Preferred Stock, shares outstanding	0	0
Common Stock, par value	$ 0.001	$ 0.001
Common Stock, shares authorized	200,000	200,000
Common Stock, shares issued	13,310	11,339
Common Stock, shares outstanding	13,310	11,339