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FAIR VALUE MEASUREMENTS (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
FAIR VALUE MEASUREMENTS    
Interest rate swap $ 216 $ 78
Recurring    
FAIR VALUE MEASUREMENTS    
Total liabilities at fair value 216 78
Recurring | Interest rate swap    
FAIR VALUE MEASUREMENTS    
Interest rate swap 216 78
Recurring | Level 2    
FAIR VALUE MEASUREMENTS    
Total liabilities at fair value 216 78
Recurring | Level 2 | Interest rate swap    
FAIR VALUE MEASUREMENTS    
Interest rate swap $ 216 $ 78