COMMON STOCK - SUMMARY OF SHARES ISSUED AND OUTSTANDING (Details) - shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Common Stock [Roll Forward]
Beginning of Year (in shares)	92,394,155	85,506,218	79,549,080
New Issuances During Year:
Settlement of Equity Forward Sale Agreement (in shares)	0	6,779,661	0
Stock-Based Compensation Plan (in shares)	75,502	108,276	67,308
Public Equity Offering (in shares)	8,122,283	0	5,889,830
End of Year (in shares)	100,591,940	92,394,155	85,506,218