Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Allowance for accounts receivable	$ 20	$ 121
Convertible Preferred stock, par value per share (in dollars per share)	$ 0.001	$ 0.001
Convertible Preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Convertible Preferred stock, shares issued (in shares)	0	0
Convertible Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value per share (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	141,429,000	141,429,000
Common stock, shares issued (in shares)	8,316,000	5,795,000
Common stock, shares outstanding (in shares)	8,316,000	5,795,000