Share-Based Compensation - Additional Information (Details) - USD ($)	12 Months Ended
	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