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LONG-TERM OBLIGATIONS (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 20, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 19, 2018
Line of Credit Facility [Line Items]          
Long-term debt   $ 368 $ 285    
First Tennessee Bank National Association | Revolving Credit Facility          
Line of Credit Facility [Line Items]          
Revolving credit facility $ 50,000        
Debt Instrument, Description Of Variable Rate Basis one month LIBOR rate plus 150 basis points one month LIBOR rate plus an applicable margin of either 1.00% or 1.25% depending on the Company's Leverage Ratio (as such term is defined in the amended and restated master revolving credit note), which margin adjusts periodically from time to time based on changes in such Leverage Ratio, and make certain other changes to the interest rate provisions      
Interest expense on credit facility   $ 684 512 $ 492  
Outstanding borrowings credit facility   4,998 15,000    
Minimum tangible net worth required for compliance $ 160,000       $ 130,000
Tangible net worth   $ 246,000      
First Tennessee Bank National Association | Revolving Credit Facility | London Interbank Offered Rate (LIBOR) [Member]          
Line of Credit Facility [Line Items]          
Variable interest rate in addition to reference rate 1.50%        
Interest rate   2.76%      
First Tennessee Bank National Association | Revolving Credit Facility | Minimum          
Line of Credit Facility [Line Items]          
Non-usage fee for current loan agreement in annual amount percentage   0.15%      
First Tennessee Bank National Association | Revolving Credit Facility | Minimum | London Interbank Offered Rate (LIBOR) [Member]          
Line of Credit Facility [Line Items]          
Variable interest rate in addition to reference rate 1.00% 1.00%      
First Tennessee Bank National Association | Revolving Credit Facility | Maximum          
Line of Credit Facility [Line Items]          
Non-usage fee for current loan agreement in annual amount percentage   0.35%      
First Tennessee Bank National Association | Revolving Credit Facility | Maximum | London Interbank Offered Rate (LIBOR) [Member]          
Line of Credit Facility [Line Items]          
Variable interest rate in addition to reference rate 1.25% 1.25%      
Jige International S.A. | Banque Europeenne du Credit Mutuel          
Line of Credit Facility [Line Items]          
Unsecured fixed rate loan     760    
Interest rate per annum   0.30%      
Unsecured debt, long-term obligations     475    
Unsecured debt, long-term obligations due within one year   $ 368 $ 285