Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Summary of Stock Options Activity (Details)

v3.20.1
Stockholders' Equity - Summary of Stock Options Activity (Details) - $ / shares
 3 Months Ended 12 Months Ended
Mar. 31, 2020
Dec. 31, 2019
Class Of Stock [Line Items]    
Stock Options Outstanding, Beginning balance 980,884  
Stock Options, Exercised (6,334)  
Stock Options, Forfeited (1,876)  
Stock Options Outstanding, Ending balance 972,674 980,884
Stock Options, Vested and exercisable 953,431  
Stock Options, Vested and expected to vest 971,431  
Outstanding, Weighted-average exercise price, Beginning balance $ 35.24  
Weighted-average exercise price, Exercised 9.42  
Weighted-average exercise price, Forfeited 52.54  
Outstanding, Weighted-average exercise price, Ending balance 35.38 $ 35.24
Weighted-average exercise price, Vested and exercisable 35.20  
Weighted-average exercise price, Vested and expected to vest $ 35.37  
Remaining weighted-average contractual term, Outstanding 2 years 7 months 2 days 2 years 10 months 2 days
Remaining weighted-average contractual term, Vested and exercisable 2 years 6 months 29 days  
Remaining weighted-average contractual term, Vested and expected to vest 2 years 7 months 2 days  
Outstanding, Per share average intrinsic value $ 18.39 $ 34.07
Per share average intrinsic value, Vested and exercisable 18.61  
Per share average intrinsic value, Vested and expected to vest 18.40  
Minimum    
Class Of Stock [Line Items]    
Outstanding, Price per share, Beginning balance 0.75  
Price per share, Exercised 1.17  
Price per share, Forfeited 44.19  
Outstanding, Price per share, Ending balance 0.75 0.75
Price per share, Vested and exercisable 0.75  
Price per share, Vested and expected to vest 0.75  
Maximum    
Class Of Stock [Line Items]    
Outstanding, Price per share, Beginning balance 83.30  
Price per share, Exercised 24.52  
Price per share, Forfeited 56.72  
Outstanding, Price per share, Ending balance 83.30 $ 83.30
Price per share, Vested and exercisable 83.30  
Price per share, Vested and expected to vest $ 83.30