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Patents and Other Intangible Assets (Details 1) - Patents [Member]
Dec. 31, 2017
USD ($)
Finite-Lived Intangible Assets [Line Items]  
2018 $ 229,000
2019 208,000
2020 122,000
2021 46,000
2022 16,000
Thereafter 19,000
Finite-Lived Intangible Assets, Net $ 640,000