CAPITAL STOCK - Completed public offerings ofcommon stock (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2021
Stock Issued During Period Shares New Issues				18,248,000	100,828,173
Stock Issued During Period, Value, New Issues				$ 96,908	$ 514,059
At the Market Offering Program [Member]
Weighted Average Price Received Per Share	$ 4.87	$ 4.94	$ 5.40	$ 5.10	$ 4.87
Stock Issued During Period Shares New Issues	23,674,698	35,818,338	23,087,089	308,048
Stock Issued During Period, Value, New Issues	$ 115,398	$ 177,007	$ 124,746	$ 1,572
Follow-on Offering [Member]
Weighted Average Price Received Per Share				$ 5.31
Stock Issued During Period Shares New Issues				17,940,000
Stock Issued During Period, Value, New Issues				$ 95,336