Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Warrants (Details)

v3.20.2
Stockholders' Equity - Warrants (Details) - $ / shares
Jun. 30, 2020
Dec. 31, 2019
Class of Warrant or Right [Roll Forward]    
Warrants/UPO's Outstanding December 31, 2019 3,836,112 3,836,112
Warrants Outstanding June 30, 2020 3,836,112 3,836,112
Employee Stock Option    
Class of Warrant or Right [Roll Forward]    
Warrants/UPO's Outstanding December 31, 2019 24,172  
Warrants Outstanding June 30, 2020 24,172  
Common stock warrant (Series D-1)    
Class of Warrant or Right [Roll Forward]    
Exercise price per share (in dollars per share) $ 5.54  
Warrants/UPO's Outstanding December 31, 2019 14,866 14,866
Warrants Outstanding June 30, 2020 14,866 14,866
Common stock warrants (Series F)    
Class of Warrant or Right [Roll Forward]    
Exercise price per share (in dollars per share) $ 9.22  
Warrants/UPO's Outstanding December 31, 2019 377,402 377,402
Warrants Outstanding June 30, 2020 377,402 377,402
Public Warrants (PHUNW)    
Class of Warrant or Right [Roll Forward]    
Exercise price per share (in dollars per share) $ 11.50  
Warrants/UPO's Outstanding December 31, 2019 1,761,291 1,761,291
Warrants Outstanding June 30, 2020 1,761,291 1,761,291
Private Placement Warrants    
Class of Warrant or Right [Roll Forward]    
Exercise price per share (in dollars per share) $ 11.50  
Warrants/UPO's Outstanding December 31, 2019 1,658,381 1,658,381
Warrants Outstanding June 30, 2020 1,658,381 1,658,381
Unit Purchase Option Warrants    
Class of Warrant or Right [Roll Forward]    
Exercise price per share (in dollars per share) $ 11.50  
Warrants/UPO's Outstanding December 31, 2019   24,172
Warrants Outstanding June 30, 2020   24,172