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REVOLVING LOAN (Details) - USD ($)
3 Months Ended
Jun. 27, 2018
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Line of Credit Facility [Abstract]        
Outstanding balance   $ 128,569,000   $ 108,569,000
Capitalized costs net of accumulated amortization   350,000   $ 421,000
Amortization expense pertaining to capitalized costs   $ 71,000 $ 71,000  
Credit Agreement        
Line of Credit Facility [Abstract]        
Maximum borrowing capacity $ 500,000,000      
Interest rate   1.447%    
Commitment fee percentage   0.15%    
Unused portion of revolving loan   $ 371,431,000    
Credit Agreement | Minimum        
Line of Credit Facility [Abstract]        
Commitment fee percentage   0.15%    
Credit Agreement | Maximum        
Line of Credit Facility [Abstract]        
Commitment fee percentage   0.275%    
Term Loan        
Line of Credit Facility [Abstract]        
Maximum borrowing capacity 350,000,000      
Payments for outstanding balance 210,750,000      
Revolving Credit Facility        
Line of Credit Facility [Abstract]        
Maximum borrowing capacity $ 100,000,000      
Installment payments required   $ 0