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Stockholders' Equity - Additional Information (Details) - USD ($)
 1 Months Ended 3 Months Ended 12 Months Ended
Jun. 28, 2016
Feb. 28, 2018
Jan. 31, 2018
Mar. 31, 2018
Dec. 31, 2016
Dec. 31, 2017
Apr. 30, 2017
Class of Stock [Line Items]              
Make-whole liability       $ 216,147   $ 0  
Leviston              
Class of Stock [Line Items]              
Number of shares issued (in shares)   615,605          
Value of shares issued   $ 20,000          
ATM Agreement              
Class of Stock [Line Items]              
Number of shares issued (in shares)       4,679,904 9,464,764    
ATM Agreement | International Assets Advisory LLC              
Class of Stock [Line Items]              
Aggregate offering price, up to $ 5,000,000            
Commission paid (as a percent) 2.50%            
ATM Agreement | Leviston              
Class of Stock [Line Items]              
Aggregate offering price, up to             $ 7,250,000.00
Pelen LLC              
Class of Stock [Line Items]              
Membership interest subsequent to sale of shares     25.00%        
Restricted Stock | Member Of Pelen, LLC [Member]              
Class of Stock [Line Items]              
Common stock, shares issued (in shares)     1,475,410        
Share-based compensation, grant date fair value     $ 585,000        
Required proceeds to be received by member to acquire membership interest     $ 585,000