PREFERRED STOCK - Roll-forward of the Company's preferred stock (Details) shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2021 USD ($) shares
Increase (Decrease) in Temporary Equity [Roll Forward]
Beginning balance, share (in shares) | shares	169,165
Ending balance, shares (in shares) | shares	169,165
Series A Convertible Preferred Stock
Increase (Decrease) in Temporary Equity [Roll Forward]
Beginning balance	$ 165.1
Dividends declared and paid in kind	1.8
Ending balance	$ 166.9
Preferred Stock | Series A Convertible Preferred Stock
Increase (Decrease) in Temporary Equity [Roll Forward]
Beginning balance, share (in shares) | shares	167
Dividends declared and paid in kind (in shares) | shares	2
Ending balance, shares (in shares) | shares	169
Par Value | Series A Convertible Preferred Stock
Increase (Decrease) in Temporary Equity [Roll Forward]
Beginning balance	$ 0.2
Dividends declared and paid in kind	0.0
Ending balance	0.2
Additional Paid-In Capital
Increase (Decrease) in Temporary Equity [Roll Forward]
Dividends declared and paid in kind	0.0
Additional Paid-In Capital | Series A Convertible Preferred Stock
Increase (Decrease) in Temporary Equity [Roll Forward]
Beginning balance	164.9
Dividends declared and paid in kind	1.8
Ending balance	$ 166.7