Inventories (Tables)

9 Months Ended

Sep. 30, 2020

Inventories [Abstract]

Schedule of Inventories

	At December 31, 2019		At September 30, 2020
	(in thousands)
Components	$	2,645	$	1,724
Finished goods	4,702		4,765
Total inventories at cost	$	7,347	$	6,489
Depreciation of components	$	2	$	2
Depreciation of finished goods	681		686
Total depreciation	$	683	$	688
Components, net	$	2,643	$	1,722
Finished goods, at the lower of cost and net realizable value	4,021		4,079
Total net inventories	$	6,664	$	5,801