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CREDIT FACILITY AND ACQUISITION DEBT (Long-term Debt Table) (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Debt Instrument [Line Items]    
Accumulated Amortization, Debt Issuance Costs $ 1,413 $ 1,324
Current maturities on long-term debt (552) (521)
Long-term Debt, Excluding Current Maturities 3,935 3,979
Credit Agreement | Revolving Credit Facility    
Debt Instrument [Line Items]    
Debt issuance costs, net of accumulated amortization of $86 and $120, respectively (1,454)  
Revolving Credit Facility | Credit Agreement 2018    
Debt Instrument [Line Items]    
Long-term Debt 174,200 155,400
Revolving Credit Facility | Credit Agreement    
Debt Instrument [Line Items]    
Debt issuance costs, net of accumulated amortization of $86 and $120, respectively   (1,543)
Term Loan | Credit Agreement    
Debt Instrument [Line Items]    
Long-term Debt 172,746 153,857
Acquisition Debt, Deferred Purchase Price [Member] | Notes Payable, Other Payables    
Debt Instrument [Line Items]    
Long-term Debt $ 4,487 $ 4,500