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Income Taxes (Details) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Dec. 31, 2017
Dec. 31, 2016
Current:        
Federal    
State and local     228,972
Total current provision     228,972
Deferred:        
Federal    
State and local    
Total deferred provision    
Total provision $ 228,972