DEBT - Credit Facility (Details)		12 Months Ended
	Nov. 30, 2019 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Debt Instrument [Line Items]
Outstanding letters of credit		$ 27,300,000	$ 27,300,000
Remaining borrowing capacity		$ 0	$ 0
PNC Bank, National Association
Debt Instrument [Line Items]
Minimum consolidated coverage ratio		3.5
Credit Agreement | PNC Bank, National Association
Debt Instrument [Line Items]
Minimum required cash and investments held		$ 200,000,000
Maximum consolidated net leverage ratio		3.5
Line of credit | PNC Bank, National Association | Revolving credit facility
Debt Instrument [Line Items]
Revolving credit agreement term	5 years
Senior notes	$ 100,000,000
Increase in aggregate commitment amount	$ 200,000,000