CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Allowance for doubtful accounts receivable	$ 760	$ 273
Inventories, provision for obsolescence	685	392
Accumulated depreciation and amortization	$ 4,702	$ 4,403
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	75,000,000	75,000,000
Common stock, shares issued (in shares)	34,201,895	34,312,257
Common stock, shares outstanding (in shares)	34,201,895	34,169,952