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Related Party Transactions - Narrative (Details)
1 Months Ended
Jan. 26, 2017
director
$ / shares
shares
Mar. 31, 2019
Unit1
$ / shares
shares
Related Party Transactions    
Number of directors to whom the Company agreed to issue warrants | Unit1   2
Guarantor and Co-Guarantor Warrants    
Related Party Transactions    
Number of securities called by warrants (shares) | shares   107,500
Exercise price of warrants (in dollars per share) | $ / shares   $ 9.2911
Directors    
Related Party Transactions    
Number of directors to whom the Company agreed to issue warrants | director 2  
Directors | Guarantor and Co-Guarantor Warrants    
Related Party Transactions    
Number of securities called by warrants (shares) | shares 107,500  
Exercise price of warrants (in dollars per share) | $ / shares $ 9.2911