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DEBT AND CREDIT AGREEMENTS (Credit Agreements) (Details)
1 Months Ended 12 Months Ended
Oct. 31, 2021
USD ($)
extension_option
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Feb. 10, 2022
USD ($)
Jan. 31, 2020
USD ($)
2021 Agreement | Sub-Limit LOC          
Short-term Debt [Line Items]          
Number of extensions | extension_option 2        
Extension period 1 year        
2021 Agreement | Line of Credit          
Short-term Debt [Line Items]          
Available   $ 225,000,000      
Borrowed   25,000,000      
2021 Agreement | Line of Credit | Subsequent Event          
Short-term Debt [Line Items]          
Available       $ 220,000,000  
2021 Agreement | Line of Credit | Revolver          
Short-term Debt [Line Items]          
Line of credit facility borrowing capacity   $ 250,000,000      
Weighted Average Interest Rate (in percentage)   2.53%      
2021 Agreement | Line of Credit | Revolver | LIBOR          
Short-term Debt [Line Items]          
Basis spread on variable rate (in percentage)   1.00%      
2021 Agreement | Line of Credit | Revolver | Base Rate          
Short-term Debt [Line Items]          
Basis spread on variable rate (in percentage)   0.00%      
2021 Agreement | Line of Credit | Sub-Limit LOC          
Short-term Debt [Line Items]          
Line of credit facility borrowing capacity   $ 50,000,000      
Borrowed $ 10,000,000        
Weighted Average Interest Rate (in percentage) 1.00%        
2021 Agreement | Line of Credit | Sub-Limit Swingline          
Short-term Debt [Line Items]          
Line of credit facility borrowing capacity   $ 15,000,000      
2015 Agreement | Line of Credit          
Short-term Debt [Line Items]          
Available     $ 238,000,000    
Borrowed     12,000,000   $ 12,000,000
2015 Agreement | Line of Credit | Revolver          
Short-term Debt [Line Items]          
Line of credit facility borrowing capacity     $ 250,000,000    
Weighted Average Interest Rate (in percentage)     0.00%    
2015 Agreement | Line of Credit | Revolver | LIBOR          
Short-term Debt [Line Items]          
Basis spread on variable rate (in percentage)     1.00%    
2015 Agreement | Line of Credit | Revolver | Base Rate          
Short-term Debt [Line Items]          
Basis spread on variable rate (in percentage)     0.00%    
2015 Agreement | Line of Credit | Sub-Limit LOC          
Short-term Debt [Line Items]          
Line of credit facility borrowing capacity     $ 50,000,000    
Weighted Average Interest Rate (in percentage)         1.00%