General form of registration statement for all companies including face-amount certificate companies

SHAREHOLDERS' EQUITY - Narrative (Details)

v3.21.4
SHAREHOLDERS' EQUITY - Narrative (Details)
$ / shares in Units, $ in Thousands
 1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Dec. 01, 2020
$ / shares
shares
Sep. 30, 2020
USD ($)
shares
Jun. 30, 2020
USD ($)
item
$ / shares
shares
Sep. 30, 2020
shares
Sep. 30, 2021
USD ($)
$ / shares
shares
Sep. 30, 2020
USD ($)
shares
Dec. 31, 2020
USD ($)
$ / shares
shares
Aug. 31, 2021
$ / shares
shares
Jun. 09, 2021
$ / shares
shares
Dec. 31, 2019
$ / shares
shares
Nov. 22, 2019
$ / shares
Business Acquisition, Equity Interests Issued or Issuable [Line Items]                      
Common stock, shares authorized         180,000,000   180,000,000 900,000,000      
Common stock, par value (in dollars per share) | $ / shares         $ 0.001   $ 0.001 $ 0.001   $ 0.001  
Common stock, shares issued         11,839,304   11,275,788     34,795,313  
Common stock, shares outstanding         11,839,304   11,275,788     34,795,313  
Price per unit | $ / shares $ 0.64                    
Number of common share per unit 1                    
Number of warrant per unit 1                    
Common share purchase warrants per unit 1               1    
Warrant exercise price | $ / shares $ 0.78               $ 7.55   $ 1.90
Warrants term 5 years               48 months    
Proceeds from common share issuance, net | $         $ 832 $ 102 $ 9,611        
Share issuance, net (in shares) 16,357,703   156,032                
Number of shares issued to settle outstanding accounts payable   50,000                  
Outstanding accounts payable settled using shares issuance | $   $ 40                  
June Offering                      
Business Acquisition, Equity Interests Issued or Issuable [Line Items]                      
Proceeds from issuance of units | $     $ 300                
Price per unit | $ / shares     $ 0.81                
Number of common share per unit     1                
Number of warrant per unit     0.50                
Common share purchase warrants per unit     1                
Warrant exercise price | $ / shares     $ 1.13                
Warrants term     24 months                
Proceeds from common share issuance, net | $     $ 102                
Share issuance, net (in shares)     125,923                
Number of surgeons to whom shares are issued | item     2                
Common Stock                      
Business Acquisition, Equity Interests Issued or Issuable [Line Items]                      
Common stock, shares authorized             900,000,000     900,000,000  
Common stock, shares issued             56,378,939        
Common stock, shares outstanding             56,378,939        
Share issuance, net (in shares)       25,184 171,032 25,184 16,483,626