Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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The price per share of the conversion feature embedded in the debt instrument.

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COMMON STOCK AND EARNINGS (LOSS) PER SHARE - Anti-dilutive Securities and Convertible Notes (Details) - $ / shares	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 10, 2021	Dec. 31, 2020	Mar. 15, 2020	Feb. 04, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities (in shares)	19,490	14,402
Interest rate (as a percent)		0.7325%	0.22%
Additional diluted outstanding shares related to Convertible Notes	0
4.50% Convertible Senior Notes due 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Interest rate (as a percent)					4.50%
Conversion price per share (in dollars per share)					$ 68.90
3.875% Convertible Senior Notes due 2025
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Interest rate (as a percent)	3.875%			3.875%		3.875%
Conversion price per share (in dollars per share)	$ 53.91