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NOTES PAYABLE AND AMENDED CREDIT AGREEMENT (Tables)
 3 Months Ended
Mar. 31, 2021
NOTES PAYABLE AND AMENDED CREDIT AGREEMENT [Abstract]  
Credit Agreement and Notes Payable
Amounts outstanding under the Amended Credit Agreement (as defined below) and notes payable as of March 31, 2021 and December 31, 2020 consisted of the following (in thousands):

  
March 31, 2021
    
December 31, 2020
  
Credit Agreement average effective interest rate of 3.0% and 2.6% in 2021 and 2020, respectively (inclusive of unused fee)
  
$
16,000
    
$
16,000
  
Various notes payable with $5,079 plus accrued interest due in the next year, interest accrues in the range of 3.25% through 5.50% per annum
    
5,650
      
5,495
  
   
$
21,650
    
$
21,495
  
Less current portion
    
(5,079
)
    
(4,899
)
Long term portion
  
$
16,571
    
$
16,596
  
Aggregate Annual Payments of Principal Required to Revolving Credit Facility
Subsequent aggregate annual payments of principal required pursuant to the Amended Credit Agreement and outstanding notes payable at March 31, 2021 are as follows (in thousands):

During the twelve months ended March 31, 2022
  
$
5,079
  
During the twelve months ended March 31, 2023
    
571
  
During the twelve months ended March 31, 2026
    
16,000
  
   
$
21,650