Supplementary Balance Sheet Information (Tables)

12 Months Ended

Dec. 31, 2022

Disclosure Text Block Supplement [Abstract]

Components of Inventory

Inventory:

	December 31,
(in thousands):	2022		2021
Raw materials	$	6,697	$	4,444
Work-in-process		1,871		1,726
Finished goods		7,316		6,759
Inventory	$	15,884	$	12,929

Components of prepaid expenses and other current assets

Prepaid expenses and other current assets:

	December 31,
(in thousands):	2022		2021
Prepaid inventory	$	1,225	$	578
Prepaid insurance		662		680
Other		1,166		754
Prepaid expenses and other current assets	$	3,053	$	2,012

Summary of Property, Plant, and Equipment

Property, Plant, and Equipment, net:

	December 31,
(in thousands):	2022			2021
Building	$	199		$	211
Leasehold improvements		464			89
Equipment and computers		8,566			8,150
Furniture and fixtures		475			471
Construction in progress		2,957			31
Total property, plant, and equipment before depreciation and land		12,661			8,952
Less: accumulated depreciation		(8,538	)		(8,049	)
Total property, plant, and equipment, net before land		4,123			903
Land		155			164
Property, plant, and equipment, net	$	4,278		$	1,067

Components of Accrued Liabilities

Accrued Liabilities:

	December 31,
(in thousands):	2022		2021
Payroll and benefits	$	4,674	$	3,969
Warranty accrual, current portion		1,293		565
Lease liability		638		405
Accrued professional services		591		275
Accrued insurance premium		490		600
Taxes		432		558
Settlement accrual		—		805
Other		1,092		1,099
Accrued liabilities	$	9,210	$	8,276