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Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - $ / shares
Mar. 31, 2019
Dec. 31, 2018
Apr. 30, 2018
Mar. 31, 2018
Shareholders/members equity/(deficit):        
Common stock, par value (in dollars per share) $ 0.001 $ 0.001    
Common stock, shares authorized (in shares) 250,000,000 250,000,000 350,000,000 25,000
Common stock, shares issued (in shares) 24,975,139 24,957,309    
Common stock, shares outstanding (in shares) 24,975,139 24,957,309