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DEBT - Credit Facility (Details)
1 Months Ended 15 Months Ended
Sep. 30, 2020
USD ($)
Dec. 31, 2021
USD ($)
Mar. 31, 2022
Sep. 30, 2021
USD ($)
Dec. 31, 2020
USD ($)
Debt Instrument [Line Items]          
Remaining borrowing capacity       $ 0 $ 0
PNC bank, national association | Forecast          
Debt Instrument [Line Items]          
Minimum consolidated coverage ratio     3.5    
Credit agreement | PNC bank, national association | Forecast          
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