Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Accounts receivable, allowance for credit loss, current	$ 1,579	$ 1,238
Unamortized discount, current	2,215	2,207
Unamortized discount, noncurrent	$ 9,861	$ 11,369
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized (in shares)	50,000,000	50,000,000
Common stock, shares issued (in shares)	29,460,588	25,250,120
Common stock, shares outstanding (in shares)	29,460,588	25,250,120