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LONG-TERM DEBT AND FINANCING ARRANGEMENTS - Summary (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Long-term debt obligations    
Long-term debt $ 258,678 $ 225,532
Less current portion 89,766 50,615
Long-term debt, less current portion 168,912 174,917
Credit Facility    
Long-term debt obligations    
Long-term debt $ 88,000 50,000
Interest rate (as a percent) 1.60%  
Credit Facility | Interest rate swap agreement, maturing on June 30, 2022    
Long-term debt obligations    
Amount of borrowings covered by the interest rate swap $ 50,000 $ 50,000
Effective fixed interest rate on hedged borrowings (as a percent) 3.12% 3.12%
Notes payable    
Long-term debt obligations    
Long-term debt $ 170,678 $ 175,530
Weighted-average interest rate (as a percent) 2.40%  
Finance lease obligations    
Long-term debt obligations    
Long-term debt   $ 2