MEZZANINE EQUITY (Details) $ / shares in Units, $ in Millions	1 Months Ended	12 Months Ended
	Mar. 31, 2021 USD ($) $ / shares shares	Dec. 31, 2021 USD ($) owner $ / shares shares	Mar. 31, 2023 $ / shares shares
Temporary Equity [Line Items]
Number of unaffiliated investors | owner		2
Number of warrants per unit (in shares) | shares	2.5
Aggregate number of common stock (in shares) | shares			41,824,476
Exercise price of warrants (in dollars per share) | $ / shares	$ 1.087		$ 1.46
Value of warrants issued | $	$ 9.5
Equity issuance costs | $	0.4
Proceeds received from sale of equity | $	23.0
Proceeds used to fund construction and upgrades of owned and managed facilities | $	7.3
Proceeds used to pay down debt and related interest | $	$ 15.7
Hadron Healthcare
Temporary Equity [Line Items]
Term of warrants (in years)	4 years
Series B Convertible Preferred Stock
Temporary Equity [Line Items]
Share price (in dollars per share) | $ / shares		$ 3.00
Term of option to convert (in years)		6 years
Conversion price of preferred stock (in dollars per share) | $ / shares		$ 3.00
Threshold VWAP, in excess of (in dollars per share) | $ / shares		$ 4.00
Number of consecutive trading days		20 days
Number of consecutive trading dates after anniversary		60 days
VWAP threshold, less than or equal to (in dollars per share) | $ / shares		$ 0.50
Conversion price after anniversary (in dollars per share) | $ / shares		1.00
VWAP threshold, greater than (in dollars per share) | $ / shares		$ 0.50
Series B Convertible Preferred Stock | Exchange Agreement | Two Unaffiliated Institutional Shareholders
Temporary Equity [Line Items]
Debt instrument, face amount | $		$ 4.4
Number of shares converted (in shares) | shares		4,908,333
Series C Convertible Preferred Stock | Hadron Healthcare
Temporary Equity [Line Items]
Shares issued per unit (in shares) | shares	1
Shares issued (in shares) | shares	6,216,216
Series C Convertible Preferred Stock | Securities Purchase Agreement | Maximum | Hadron Facility | Convertible Debt
Temporary Equity [Line Items]
Debt instrument, face amount | $	$ 46.0
Common stock
Temporary Equity [Line Items]
Shares issued on conversion of preferred stock (per share) | shares	5
Common stock | Maximum
Temporary Equity [Line Items]
Aggregate number of common stock (in shares) | shares	15,540,540
Units Consisting of Convertible Debt and Warrants | Securities Purchase Agreement
Temporary Equity [Line Items]
Value of shares purchased | $	$ 23.0
Units | Securities Purchase Agreement
Temporary Equity [Line Items]
Price per unit (in dollars per unit) | $ / shares	$ 3.70