Income Taxes Components of deferred tax assets and liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets:
Net operating loss carryforward	$ 7,786	$ 9,878
Compensation and benefits	9,947	9,598
Inventory reserve	1,589	1,769
Capital Loss Carryforward	0	1,317
Accounts receivable reserve	152	142
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Deferred Rent	3,326	0
Other	146	457
Total deferred tax assets	22,946	23,161
Deferred Tax Liabilities, Intangible Assets	2,360	2,478
Deferred Tax Liabilities, Leasing Arrangements	2,850	0
Deferred tax liabilities:
Property, plant and equipment	353	(20)
Other	625	303
Total deferred liabilities	6,188	2,761
Net deferred assets before valuation allowance	16,758	20,400
Valuation allowance	(1,235)	(2,569)
Net deferred assets	$ 15,523	$ 17,831