Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Statement [Abstract]
NET REVENUE	$ 30,368	$ 14,588	$ 48,213	$ 28,904
COST OF GOODS SOLD	18,608	10,808	29,783	21,658
GROSS PROFIT	11,760	3,780	18,430	7,246
OPERATING EXPENSES:
Sales and distribution	11,828	8,163	21,101	16,956
Research and development	1,860	897	3,023	2,019
General and administrative	4,414	3,130	7,780	5,336
TOTAL OPERATING EXPENSES:	18,102	12,190	31,904	24,311
OPERATING LOSS	(6,342)	(8,410)	(13,474)	(17,065)
INTEREST EXPENSE—net	1,281	506	2,494	1,063
OTHER EXPENSE (INCOME)—net	(13)	16	31	(25)
LOSS BEFORE INCOME TAXES	(7,610)	(8,932)	(15,999)	(18,103)
PROVISION FOR INCOME TAXES	15	3	15	3
NET LOSS	$ (7,625)	$ (8,935)	$ (16,014)	$ (18,106)
Net loss per share, basic and diluted	$ (0.62)	$ (0.90)	$ (1.35)	$ (1.95)
Weighted-average number of shares outstanding, basic and diluted	12,206,747	9,963,851	11,872,326	9,273,735