Employee Benefits - Additional Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($) installment shares	Mar. 31, 2020 USD ($) shares	Dec. 31, 2020 USD ($)
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Healthcare benefit expense, net of employee contributions | $	$ 7,200	$ 7,000
Accrued compensation | $	47,520		$ 45,876
Administration expense related to employee contribution plan | $	$ 700	$ 600
2014 Omnibus Incentive Plan
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Common stock shares available for issuance (in shares)	1,900,000
Common stock shares authorized (in shares)	3,000,000.0
Performance-Based Stock Awards
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Share-based awards granted (in shares)	42,449
Liability Performance-Based Stock Awards
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Share-based awards granted (in shares)	5,000	7,000
Directors
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Share-based awards granted (in shares)	0	316
Officer | Performance-Based Stock Awards
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Share-based awards granted (in shares)	100,000
Officer | Performance-Based Stock Awards | Common Stock
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Number of equal installments for common stock | installment	2
Cost of sales
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Workers' compensation expense | $	$ 4,200	$ 4,400
Medical IBNR Included in Accrued Compensation
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Accrued compensation | $	$ 3,300		$ 3,100