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Stockholders' Equity - Additional Information (Details) - USD ($) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Aug. 31, 2018 | Mar. 31, 2018 | Mar. 31, 2017 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Stock issued under ESPP (in shares) |  |  |  | 201,581 | 253,301 |
Weighted average purchase price of shares purchased (in dollars per share) |  |  |  | $ 25.55 | $ 15.77 |
Exercises in period, intrinsic value |  |  |  | $ 90,800,000 | $ 57,200,000 | $ 16,800,000
Capitalized share-based compensation expense |  |  |  | $ 0 | 0 | $ 0
Restricted Stock Units (RSUs) | Minimum |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Vesting period of stock awards |  |  |  | 3 years |  |
Restricted Stock Units (RSUs) | Maximum |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Vesting period of stock awards |  |  |  | 4 years |  |
Performance-based restricted stock units | Minimum |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Vesting period of stock awards |  |  |  | 2 years |  |
Performance-based restricted stock units | Maximum |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Vesting period of stock awards |  |  |  | 3 years |  |
Employee stock purchase plan |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Proceeds from issuance of shares under ESPP |  |  |  | $ 5,100,000 | $ 4,000,000.0 |
RSUs and PSUs |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Performance based restricted stock unit award granted to executive officers (in shares) |  |  |  | 2,910,400 |  |
Performance based restricted stock unit award granted weighted average grant date fair value (in dollars per share) |  |  |  | $ 37.56 | $ 21.67 | $ 9.10
Total fair value of awards vested |  |  |  | $ 222,300,000 | $ 120,900,000 | $ 49,400,000
Unrecognized compensation costs related to restricted stock units |  |  |  | $ 91,200,000 |  |
Weighted average vesting period for recognition of compensation expense |  |  |  | 1 year 7 months 6 days |  |
2013 Plan | Performance-based restricted stock units |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Vesting period of stock awards |  |  |  | 3 years |  |
2019 Performance Period | Performance-based restricted stock units |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Performance based restricted stock unit award granted weighted average grant date fair value (in dollars per share) |  |  |  | $ 40.42 |  |
March 2019 PSU Grants | Performance-based restricted stock units |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Performance based restricted stock unit award granted to executive officers (in shares) |  |  |  | 436,042 |  |
March 2018 PSU Grants | Performance-based restricted stock units |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Vesting period of stock awards |  | 3 years |  |  |  |
Performance based restricted stock unit award granted to executive officers (in shares) |  |  |  |  | 845,934 |
Performance based restricted stock unit award granted weighted average grant date fair value (in dollars per share) |  |  |  |  | $ 19.70 |
2017 Performance Period | Performance-based restricted stock units |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Vesting period of stock awards |  |  | 3 years |  |  |
Performance based restricted stock unit award granted to executive officers (in shares) |  |  |  |  |  | 1,822,284
Performance based restricted stock unit award granted weighted average grant date fair value (in dollars per share) |  |  |  |  |  | $ 8.91
2018 Performance Period | Performance-based restricted stock units |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Vesting period of stock awards | 3 years |  |  |  |  |
Performance based restricted stock unit award granted to executive officers (in shares) |  |  |  |  | 45,756 |
Performance based restricted stock unit award granted weighted average grant date fair value (in dollars per share) |  |  |  |  | $ 28.74 |
Common Stock Warrant |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Common stock warrants remaining(in shares) |  |  |  |  | 0 |
Weighted average exercise price (in dollars per share) |  |  |  |  | $ 12.00 | $ 12.00
Common stock warrants exercised |  |  |  |  | 100,000 | 100,000

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