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Property and Equipment (Details) - USD ($)
Dec. 31, 2017
Dec. 31, 2016
Property, Plant and Equipment [Abstract]    
Computer hardware and software $ 16,304,037 $ 16,913,397
Furniture and equipment 571,004 911,391
Leasehold improvements 1,688,030 1,930,701
Gross 18,563,071 19,755,489
Less accumulated depreciation (17,926,959) (18,580,547)
Net $ 636,112 $ 1,174,942