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Summary of Significant Accounting Policies (Details) - USD ($)
Mar. 31, 2019
Dec. 31, 2018
Accounting Policies [Abstract]    
Raw Materials $ 4,445,000 $ 4,622,000
Work In Progress 18,290,000 17,530,000
Finished Goods 10,095,000 10,915,000
Inventory Reserve (4,143,000) (4,016,000)
Total Inventory $ 28,687,000 $ 29,051,000