Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Inventory:
Raw materials	$ 1,050	$ 829
Sub-assemblies	1,202	682
Finished goods	1,974	1,492
Total inventory	4,226	3,003
Prepaid expenses and other current assets:
Prepaid insurance	716	736
Prepaid advertising and marketing	356	698
Other current assets	197	188
Total prepaid expenses and other current assets	1,269	1,622
Accrued and other liabilities:
Payroll and benefits	2,362	1,527
Accrued legal settlements	2,000
Customer deposits	605	549
Taxes	190	307
Accrued insurance premium	151	301
Accrued professional	284	300
Other liabilities	222	185
Total accrued and other liabilities	$ 5,814	$ 3,169