Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Statement [Abstract]
NET REVENUE	$ 40,603	$ 24,672	$ 88,817	$ 53,576
COST OF GOODS SOLD	23,076	14,262	52,859	35,919
GROSS PROFIT	17,527	10,410	35,958	17,657
OPERATING EXPENSES:
Sales and distribution	17,307	11,560	38,409	28,516
Research and development	2,634	790	5,657	2,810
General and administrative	7,999	2,767	15,779	8,103
TOTAL OPERATING EXPENSES:	27,940	15,117	59,845	39,429
OPERATING LOSS	(10,413)	(4,707)	(23,887)	(21,772)
INTEREST EXPENSE—net	875	439	3,368	1,503
OTHER EXPENSE (INCOME)—net	21	(19)	53	(45)
LOSS BEFORE INCOME TAXES	(11,309)	(5,127)	(27,308)	(23,230)
PROVISION FOR INCOME TAXES	8		23	3
NET LOSS	$ (11,317)	$ (5,127)	$ (27,331)	$ (23,233)
Net loss per share, basic and diluted	$ (0.75)	$ (0.49)	$ (2.11)	$ (2.40)
Weighted-average number of shares outstanding, basic and diluted	15,134,422	10,532,926	12,971,641	9,687,078