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Note 10 - Related Party Transactions | 3 Months Ended
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Mar. 31, 2019
Notes to Financial Statements |
Related Party Transactions Disclosure [Text Block] | Note 10 - Related Party Transactions Stephen M. Merrick, Chief Executive Officer of the Company, is of counsel to the law firm of Vanasco Genelly and Miller PC which used to provide legal services to the Company. Legal fees paid by the Company to this firm for the three months ended March 31, 2019 and 2018, respectively, were none and $72,000. John H. Schwan, through an investment entity, and Stephen M. Merrick, Chief Executive Officer of the Company, also through an investment entity own, in aggregate, a 50% interest in Clever Container Company L.L.C., an Illinois limited liability company (“Clever Container”). During the three months ended March 31, 2019 and 2018, Clever Container purchased various products from the Company in the amount of $62,000 and $237,000, respectively. As of March 31, 2019 and 2018, the balance of accounts receivable from Clever Container to the Company were $1,373,000 and $1,102,000, respectively.

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