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Share-Based Compensation - Additional Information (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Unrecognized compensation cost | $ 16,700,000 | $ 16,100,000 |
Period of expense of unrecognized compensation cost | 2 years 7 months 6 days | 2 years 4 months 24 days |
Weighted average grant-date fair value of stock options granted (in dollars per share) | $ 4.66 | $ 8.18 | $ 10.48
Aggregate intrinsic value of stock options exercised | $ 1,300,000 | $ 5,500,000 | $ 7,800,000
Fair value of options vested | 2,600,000 | 3,000,000.0 | 3,700,000
Tax benefit from exercise of stock options | $ 100,000 | $ 200,000 | $ 1,000,000.0
Weighted average grant-date fair value of restricted stock units granted | $ 24.43 | $ 40.49 | $ 52.06
Average weekly hours of work | 20 hours |  |
SERP |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Percentage of earned income on a pre-tax basis, deferred | 25.00% |  |
Percentage of match participants' deferrals | 25.00% |  |
Percentage of deferral in the form of common stock | 15.00% |  |
Full vest in matching contribution | 3 years |  |
Shares authorized for issuance (in shares) | 1,000,000.0 |  |
Common stock reserved for future issuance (in shares) | 300,000 |  |
Stock options vested and outstanding (in shares) | 300,000 |  |
Restricted Stock Units (RSUs) |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Restricted stock granted (in shares) | 300,000 | 200,000 | 100,000
Weighted average grant-date fair value of restricted stock units granted | $ 24.43 | $ 40.49 | $ 52.06
Restricted Stock |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Restricted stock granted (in shares) | 0 | 0 | 0
Employee Stock Purchase Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Shares available for future grant (in shares) | 2,100,000 |  |
Requisite service period for plan participation eligibility | 2 years |  |
Stock options authorized to issue to employees (in shares) | 4,100,000 |  |
Annual earnings withheld to purchase common stock | $ 21,250 |  |
Percent of IRS limitation | 85.00% |  |
Maximum fair value of common stock purchased | $ 25,000 |  |
ESPP purchase price of common stock, percent of market price | 85.00% |  |
ESPP purchase price of common stock, percent of market price offering period | 85.00% |  |
Restricted stock and restricted stock units |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Period of expense of unrecognized compensation cost | 3 years 2 months 12 days |  |
Restricted stock granted (in shares) | 309,000 |  |
Weighted average grant-date fair value of restricted stock units granted | $ 24.43 |  |
2020 Omnibus Incentive Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Common stock reserved for future issuance (in shares) | 5,200,000 |  |
Shares available for future grant (in shares) | 2,500,000 |  |
Maximum term of grants | 10 years |  |

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