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Summary of Significant Accounting Policies (Details) - USD ($)
Jun. 30, 2018
Dec. 31, 2017
Accounting Policies [Abstract]    
Raw Materials $ 14,383,000 $ 13,936,000
Work In Progress 19,715,000 20,504,000
Finished Goods 10,963,000 10,636,000
Inventory Reserve (6,016,000) (5,871,000)
Total Inventory $ 39,045,000 $ 39,205,000