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Equity - Common Stock and Preferred Stock (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 1 Months Ended 6 Months Ended
Jun. 01, 2022
Jul. 31, 2018
Jul. 31, 2022
Jun. 30, 2022
Jun. 30, 2021
Stockholders' equity          
Common stock, authorized shares       62,500  
Preferred stock, authorized shares       2,000  
Number of shares of common stock issued     1,500    
Net proceeds from the offering       $ 4,798 $ 5,309
ATM          
Stockholders' equity          
Number of shares of common stock issued       501  
Aggregate offering price       $ 8,700  
Gross proceeds from the offering       624  
Net proceeds from the offering       $ 587  
Share price of shares issued in offering (in dollars per share)       $ 1.24  
Participation Right          
Stockholders' equity          
Stock Issued, Investor, Maximum Voting Power Percentage   20.00%      
Stock Issued, Investor, Maximum Beneficial Ownership Percentage   20.00%      
Underwritten public offering          
Stockholders' equity          
Number of shares of common stock issued 4,186        
Gross proceeds from the offering $ 4,600        
Net proceeds from the offering $ 4,200        
Share price of shares issued in offering (in dollars per share) $ 1.11        
Common Stock | ATM          
Stockholders' equity          
Number of shares of common stock issued       1,600  
Gross proceeds from the offering       $ 6,100  
Net proceeds from the offering       $ 5,900  
Share price of shares issued in offering (in dollars per share)       $ 3.84