Inventories (Tables)

12 Months Ended

Dec. 31, 2019

Inventory Disclosure [Abstract]

Components of inventory

Inventories are as follows (in thousands):

	December 31,
	2019			2018
Raw materials	$	4,339		$	10,608
Work-in-process	—			—
Finished goods	23,056			18,798
Inventories	27,395			29,406
Less reserve for excess and obsolete inventory	(5,698		)	(2,117		)
Inventories, net	$	21,697		$	27,289

Schedule of inventory reserve

Changes in the reserve for excess and obsolete inventory are as follows (in thousands):

	2019			2018			2017
Balance, beginning of year	$	2,117		$	368		$	50
Charged to provisions	5,659			2,418			388
Deductions for disposals	(2,078		)	(669		)	(70		)
Balance, end of the year	$	5,698		$	2,117		$	368