Components of Net Periodic Benefit Cost - Employer Contributions (Details) - USD ($)	9 Months Ended
	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022
Defined Benefit Plan Disclosure [Line Items]
Amount of potential discretionary contributions accrued to a defined contribution plan	$ 1,900,000		$ 1,700,000
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Expected future benefit payment		$ 0
Pension Benefits | Employee Stock Option [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected future benefit payment		642,000
Contributions by employer	0
Post-Retirement Health Benefits
Defined Benefit Plan Disclosure [Line Items]
Expected future benefit payment		$ 245,000
Contributions by employer	$ 163,000