Income Taxes - Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets:
Net operating loss carryforwards	$ 33,166	$ 23,589
Intangible assets	2,916	6,026
Tax credit carryforwards	4,001	3,802
Goodwill	5,284	4,087
Property and equipment	3,229	3,640
Lease liability	1,750	1,945
Inventory valuation reserves	2,675	2,093
Allowance for doubtful accounts	1,184	1,134
Accrued liabilities	569	2,076
Accrued compensation	401	657
Equity compensation	399	435
Other	304	353
Total gross deferred tax assets	55,878	49,837
Valuation allowance	(54,875)	(48,671)
Total deferred tax assets, net	1,003	1,166
Deferred tax liabilities:
ROU asset	(453)	(686)
Prepaid insurance and other	(271)	(257)
Total gross deferred tax liabilities	(724)	(943)
Net deferred tax assets	$ 279	$ 223