v3.10.0.1
CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Thousands
Sep. 30, 2018
Dec. 31, 2017
Statement of Financial Position [Abstract]    
Allowance for doubtful accounts $ 131 $ 143
Common stock, par value (in dollars per share) $ 0.00025 $ 0.00025
Common stock, shares authorized 50,000,000 50,000,000
Common stock, shares issued 12,807,520 12,621,781
Common stock, shares outstanding 12,807,520 12,621,781