ACCOUNTS RECEIVABLE (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Accounts Receivable [Abstract]
Accounts receivable	$ 59,796	$ 31,091
Less: allowance for doubtful accounts	0	0
Total	59,796	31,091
Accounts receivable pledged as collateral for borrowings	$ 0	$ 1,433