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Operating Leases (Details Textual)
 12 Months Ended
Dec. 31, 2016
USD ($)
ft²
Location
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Leases [Abstract]      
Lessee Leasing Agreements, Operating Leases, Area under Lease | ft² 37,829    
Operating Lease Expense Excluding Rent $ 400,000 $ 400,000 $ 400,000
Number of office space locations | Location 1    
Operating Leases, Future Minimum Payments Due $ 4,732,865