EARNINGS PER SHARE - Narrative (Details)	12 Months Ended
	Dec. 31, 2020 shares	Dec. 31, 2019 shares	Dec. 31, 2018 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Antidilutive securities excluded from EPS calculation (in shares)	248,744	269,208	170,755
LTIP | Minimum | Performance stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Ratio at which award holders get common stock of the company	0
LTIP | Maximum | Performance stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Ratio at which award holders get common stock of the company	2