Quarterly report pursuant to Section 13 or 15(d)

Debt (The Credit Agreement) (Details)

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Debt (The Credit Agreement) (Details) - USD ($)
9 Months Ended
Dec. 22, 2023
Oct. 05, 2023
Oct. 04, 2023
Sep. 18, 2023
May 10, 2023
Mar. 24, 2023
Feb. 20, 2023
Oct. 11, 2022
Mar. 31, 2024
Mar. 31, 2023
Feb. 09, 2024
Jan. 16, 2024
Dec. 21, 2023
Jun. 30, 2023
Jan. 31, 2023
Oct. 10, 2022
Nov. 01, 2021
Debt Instrument [Line Items]                                  
Restricted cash                 $ 215,000         $ 253,000      
Amount released from restricted cash                 1,148,000 $ 18,890,000              
Period for payment of equity interests at-the-market facility             5 days                    
Settlement payment received           $ 5,100,000                      
Collateral held                 1,100,000                
Restricted cash                 1,100,000         3,300,000      
Secured Term Loan                                  
Debt Instrument [Line Items]                                  
Secured term loan                           13,057,000     $ 22,375,000
Deferred finance costs                           120,000      
Interest rate (as percent)                                 3.25%
Debt balance                 12,655,000         $ 12,937,000      
Amended Credit Agreement                                  
Debt Instrument [Line Items]                                  
Interest rate (as percent)         5.25%                        
Unrestricted cash     $ 0                            
Percentage of payment of equity Interests from proceeds of at-the-market facility           40.00% 40.00%                    
Percentage of payment from proceeds of sales of equipment           40.00%                      
Amount retained           $ 2,000,000                      
Collateral held                 900,000                
Withdrawal from restricted funds   $ 2,000,000                              
Restricted cash                     $ 900,000            
Threshold period for delivery of executed copy of Purchase Agreement for the sale of the Facility after entry of Amendment       1 day                          
Amended Credit Agreement | If The Facility Is Sold On Or Before June 30, 2023                                  
Debt Instrument [Line Items]                                  
Payable in-kind rate (in percent)         1.00%                        
Amended Credit Agreement | If The Facility Is Sold After June 2023, But On Or Before September 30, 2023                                  
Debt Instrument [Line Items]                                  
Payable in-kind rate (in percent)         2.00%                        
Amended Credit Agreement | If The Facility Is Sold After September 30, 2023, Or Not Sold Prior To The Maturity Date                                  
Debt Instrument [Line Items]                                  
Payable in-kind rate (in percent)         3.00%                        
Amended Credit Agreement | If The Facility Is Not Sell On Or Before December 1, 2023                                  
Debt Instrument [Line Items]                                  
Amount of fees to be paid       $ 20,000                          
2024 Term Note                                  
Debt Instrument [Line Items]                                  
Secured term loan                       $ 1,071,572          
College Station Investors LLC And Bryan Capital | Secured Term Loan                                  
Debt Instrument [Line Items]                                  
Secured term loan                                 $ 22,375,000
Woodforest Bank                                  
Debt Instrument [Line Items]                                  
Unrestricted cash                             $ 7,500,000    
Percentage of payment of equity Interests from proceeds of at-the-market facility           20.00%                      
Percentage of payment from proceeds of sales of equipment           20.00%                      
Woodforest Bank | Amended Credit Agreement                                  
Debt Instrument [Line Items]                                  
Interest rate (as percent) 4.50%                       5.25%        
Payable in-kind rate (in percent) 4.50%                       3.00%        
Debt amortization payment               $ 250,000                  
Amendment fee               22,375                  
Liquidity covenant, amount           $ 7,500,000   7,500,000 $ 1,000,000             $ 10,000,000  
Collateral held         $ 3,000,000.0 3,000,000                      
Minimum balance requirement $ 900,000                                
Increase in fees payable 10,000                                
Amount of fees to be paid 155,000   20,000                            
Withdrawal from restricted funds $ 150,000                                
Woodforest Bank | Amended Credit Agreement | Date Of Amendment                                  
Debt Instrument [Line Items]                                  
Principal payment               5,500,000                  
Woodforest Bank | Amended Credit Agreement | Within Two Business Days Of Frunhofer Legal Settlement                                  
Debt Instrument [Line Items]                                  
Principal payment               5,100,000                  
Woodforest Bank | Amended Credit Agreement | Occurrence Of Specific Milestone                                  
Debt Instrument [Line Items]                                  
Liquidity covenant, amount               $ 5,000,000.0                  
Woodforest Bank | Amended Credit Agreement | If Outstanding Principal Amount Reduced to 10,000,000                                  
Debt Instrument [Line Items]                                  
Reduction of outstanding principal amount         10,000,000.0                        
Amount to be released from restricted cash         500,000                        
Woodforest Bank | Amended Credit Agreement | If Each Additional Reduction of Outstanding Principal Amount is 2,500,000                                  
Debt Instrument [Line Items]                                  
Amount to be released from restricted cash         750,000                        
Amount of fees to be paid           $ 75,000                      
Woodforest Bank | Amended Credit Agreement | If The Facility Is Sold On Or Before June 30, 2023                                  
Debt Instrument [Line Items]                                  
Amount of fees to be paid         75,000                        
Woodforest Bank | Amended Credit Agreement | If The Facility Is Sold After June 2023, But On Or Before September 30, 2023                                  
Debt Instrument [Line Items]                                  
Amount of fees to be paid         100,000                        
Woodforest Bank | Amended Credit Agreement | If The Facility Is Sold After September 30, 2023, Or Not Sold Prior To The Maturity Date                                  
Debt Instrument [Line Items]                                  
Amount of fees to be paid         125,000                        
Woodforest Bank | Amended Credit Agreement | If Additional Outstanding Principal Amount Reduced To 250,000                                  
Debt Instrument [Line Items]                                  
Additional reduction of outstanding principal amount         $ 2,500,000                        
Woodforest Bank | Amended Credit Agreement | Withdrawal After October 16, 2023 With Minimum Balance Until November 13, 2023                                  
Debt Instrument [Line Items]                                  
Minimum balance requirement     1,250,000                            
Woodforest Bank | Amended Credit Agreement | Withdrawal After October 16, 2023 With Minimum Balance Until November 13, 2023 | Maximum [Member]                                  
Debt Instrument [Line Items]                                  
Withdrawal from deposit account     750,000                            
Woodforest Bank | Amended Credit Agreement | Withdrawal on October 4, 2023 With Minimum Balance Until October 16, 2023                                  
Debt Instrument [Line Items]                                  
Minimum balance requirement     2,000,000                            
Woodforest Bank | Amended Credit Agreement | Withdrawal on October 4, 2023 With Minimum Balance Until October 16, 2023 | Maximum [Member]                                  
Debt Instrument [Line Items]                                  
Withdrawal from deposit account     1,000,000                            
Woodforest Bank | Amended Credit Agreement | Withdrawal after November 13, 2023 with Minimum Balance Until Payment in Full                                  
Debt Instrument [Line Items]                                  
Minimum balance requirement     1,000,000                            
Woodforest Bank | Amended Credit Agreement | Withdrawal after November 13, 2023 with Minimum Balance Until Payment in Full | Maximum [Member]                                  
Debt Instrument [Line Items]                                  
Withdrawal from deposit account     $ 250,000