Income Taxes - Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Deferred tax assets:
Net operating loss carryforward	$ 5,431	$ 7,786
Compensation and benefits	10,980	9,947
Inventory reserve	1,772	1,589
Accounts receivable reserve	167	152
Leased assets	1,061	3,326
Other	329	146
Total deferred tax assets	19,740	22,946
Deferred tax liabilities:
Intangible assets	1,948	2,360
Lease liabilities	1,366	2,850
Property, plant and equipment	(975)	353
Other	503	625
Total deferred liabilities	2,842	6,188
Net deferred assets before valuation allowance	16,898	16,758
Valuation allowance	(1,257)	(1,235)
Net deferred assets	$ 15,641	$ 15,523