Quarterly report pursuant to Section 13 or 15(d)

Note 2 - Revenue - Net Sales by Product and Service (Details)

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Note 2 - Revenue - Net Sales by Product and Service (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Net sales $ 16,404 $ 23,428 $ 31,352 $ 42,756
Less: sales returns (250) (417) (397) (1,112)
Product [Member]        
Net sales 15,200 22,100 29,211 40,623
Freight and Other [Member]        
Net sales $ 1,454 $ 1,745 $ 2,538 $ 3,245