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FAIR VALUE OF FINANCIAL INSTRUMENTS - Summary of Financial Assets and Liabilities Measured at Fair Value (Details) - Measured at fair value on a recurring basis - Interest Rate Swap
$ in Thousands
Dec. 31, 2019
USD ($)
Level 1  
Financial Instruments Measured at Fair Value: Available-for-sale securities - (Corporate equity securities)  
Derivative liability $ 0
Level 2  
Financial Instruments Measured at Fair Value: Available-for-sale securities - (Corporate equity securities)  
Derivative liability 12
Estimated fair value  
Financial Instruments Measured at Fair Value: Available-for-sale securities - (Corporate equity securities)  
Derivative liability $ 12