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Property and Equipment (Details) - USD ($)
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Property, Plant and Equipment [Abstract]      
Gross carrying amount $ 19,215,321   $ 19,755,489
Accumulated depreciation (18,225,602)   (18,580,547)
Property and Equipment, net 989,719   $ 1,174,942
Depreciation expense $ 186,085 $ 224,901