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INVESTMENTS AND FAIR VALUE MEASUREMENTS (Details) - Investments Classified by Contractual Maturity Date
$ in Thousands
Jun. 30, 2020
USD ($)
Investments Classified by Contractual Maturity Date [Abstract]  
One year or less $ 4,823
After one year through five years 22,768
After five years through 10 years 0
After 10 years 0
Available-for-sale debt securities total fair value $ 27,591