Employee Benefits - Additional Information (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023	Dec. 31, 2021	Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Payment for other postretirement benefits				$ 1,700,000
Postretirement Health Coverage | Salaried VEBA
Defined Benefit Plan Disclosure [Line Items]
Maximum contribution threshold			$ 2,900,000
Payment for other postretirement benefits		$ 0
Postretirement Health Coverage | Scenario Forecast | Salaried VEBA
Defined Benefit Plan Disclosure [Line Items]
Payment for other postretirement benefits	$ 1,100,000
Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation			29,600,000		$ 18,000,000
Expected employer contributions in 2023			$ 4,200,000
Other Postretirement Benefits Plan
Defined Benefit Plan Disclosure [Line Items]
Health care cost trend rate assumed			6.90%
Decreased rate of health care cost trend			4.00%