Quarterly report pursuant to Section 13 or 15(d)

FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS (Details)

v3.20.4
FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Jun. 30, 2020
Dec. 31, 2019
Jun. 30, 2019
FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS        
Cash, cash equivalents, and restricted cash $ 37,600 $ 9,955 $ 19,712 $ 11,573