Quarterly report pursuant to Section 13 or 15(d)

MEZZANINE EQUITY (Details)

v3.23.2
MEZZANINE EQUITY (Details)
$ / shares in Units, $ in Millions
 1 Months Ended 3 Months Ended 12 Months Ended
Mar. 31, 2021
USD ($)
$ / shares
shares
Jun. 30, 2023
transaction
$ / shares
Rate
shares
Dec. 31, 2021
USD ($)
owner
$ / shares
shares
Dec. 31, 2022
shares
Temporary Equity [Line Items]        
Number of unaffiliated investors | owner     2  
Number of warrants per unit (in shares) 2.5      
Aggregate number of common stock (in shares)   42,224,476    
Exercise price of warrants (in dollars per share) | $ / shares $ 1.087 $ 0.68    
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      
Number of transactions | transaction   2    
Undesignated preferred stock, outstanding (in shares)   0   0
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)     4,908,333  
Series C Convertible Preferred Stock        
Temporary Equity [Line Items]        
Number of shares converted (in shares)   4,276,608    
Conversion ratio (in shares) | Rate   500.00%    
Undesignated preferred stock, outstanding (in shares)   1,939,608    
Series C Convertible Preferred Stock | Hadron Healthcare        
Temporary Equity [Line Items]        
Shares issued per unit (in shares) 1      
Shares issued (in 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) 5 21,383,040    
Common stock | Maximum        
Temporary Equity [Line Items]        
Aggregate number of common stock (in 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