OTHER INCOME (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($) project	Sep. 30, 2020 USD ($)
OTHER INCOME
COVID-19 relief	$ 611	$ 2,628	$ 3,447	$ 5,319
Other income			$ 2,300
Number of projects sold | project			2