Annual report pursuant to Section 13 and 15(d)

Stock-based Compensation - Stock Options Narrative (Details)

v3.19.3.a.u2
Stock-based Compensation - Stock Options Narrative (Details) - 2014 Equity Incentive Plan
12 Months Ended
Dec. 31, 2019
Minimum  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Purchase price of common stock percentage 100.00%
Expiration period 4 years
Maximum  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Expiration period 10 years