Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Net revenue
Total net revenue	$ 7,199	$ 6,257
Cost of revenue
Total cost of revenue	8,850	4,206
Gross (loss) profit	(1,651)	2,051
Operating expenses
Selling, general and administrative	51,549	30,435
Research and development	4,530	2,776
Total operating expenses	56,079	33,211
Operating loss	(57,730)	(31,160)
Other income (expense), net
Interest income	1,038	352
Interest expense	(250)	(14)
Total other income (expense), net	788	338
Loss before income tax expense	(56,942)	(30,822)
Income tax expense	15	10
Net loss	$ (56,957)	$ (30,832)
Basic and diluted net loss per share	$ (4.33)	$ (3.34)
Basic and diluted weighted average common shares outstanding	13,146	9,230
Product Sales [Member]
Net revenue
Total net revenue	$ 3,859	$ 3,159
Cost of revenue
Total cost of revenue	5,856	2,652
Service and Other [Member]
Net revenue
Total net revenue	3,340	3,098
Cost of revenue
Total cost of revenue	$ 2,994	$ 1,554