Quarterly report pursuant to Section 13 or 15(d)

Inventories (Schedule of Inventories) (Details)

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Inventories (Schedule of Inventories) (Details) - USD ($)
Jun. 30, 2019
Dec. 31, 2018
Inventories [Abstract]    
Finished goods $ 8,720,000 $ 9,608,000
Raw and processed materials 4,929,000 6,568,000
Inventories $ 13,648,913 $ 16,175,616