XML 75 R64.htm IDEA: XBRL DOCUMENT v3.19.1
Share-Based Compensation - Summary of Weighted-average Inputs and Assumptions used to Estimate Grant-date Fair Value of Stock Options (Details)
3 Months Ended
Mar. 31, 2019
$ / shares
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]  
Estimated fair value of common stock $ 16.49
Exercise price $ 16.49
Expected term (in years) 6 years 1 month 6 days
Risk-free interest rate 2.50%
Expected volatility 55.30%
Dividend yield 0.00%