Basis of Presentation (Tables)

6 Months Ended

Jun. 30, 2022

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Share-Based Payment Arrangement, Expensed and Capitalized, Amount

Stock-based compensation expense is allocated to the applicable departmental cost in our condensed consolidated financial statements. The following table summarizes total stock-based compensation expense for each of the line items on our condensed consolidated statements of operations:

	Three Months Ended				Six Months Ended
	June 30, 2022		June 30, 2021		June 30, 2022		June 30, 2021
Cost of sales
Product	$	244	$	178	$	404	$	288
Service	40		36		79		$	(8)
Total cost of sales	$	284	$	214	$	483	$	280
Operating expenses
Selling, general and administrative	$	2,512	$	2,526	$	4,733	$	4,208
Research and development	695		543		1,142		889
Total operating expenses	$	3,207	$	3,069	$	5,875	$	5,097