DISTRIBUTIONS (Details) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Distributions [Abstract]
Common share distributions payments of ordinary dividends (in usd per share)	$ 0.41	$ 0.62	$ 0.55
Common share distributions capital gain (in usd per share)	0.35	0	0
Common share distributions non-taxable distributions (in usd per share)	0	0.14	0.17
Common stock dividends per share paid (in usd per share)	$ 0.76	$ 0.76	$ 0.72
Percentage of distributions classified as ordinary income	53.90%	81.00%	76.20%
Percentage of distributions classified as capital gain	46.10%	0.00%	0.00%
Percentage of distributions classified as non-taxable distributions	0.00%	19.00%	23.80%