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Bank Borrowing - Narrative (Details)
€ in Millions
 1 Months Ended 3 Months Ended
Feb. 16, 2022
USD ($)
Aug. 18, 2021
USD ($)
Aug. 09, 2019
USD ($)
Sep. 30, 2022
USD ($)
Sep. 30, 2023
USD ($)
Sep. 30, 2023
CNY (¥)
Sep. 30, 2023
EUR (€)
Jun. 30, 2023
USD ($)
Jan. 31, 2023
USD ($)
Jan. 31, 2023
CNY (¥)
Sep. 20, 2022
USD ($)
Sep. 20, 2022
CNY (¥)
Jun. 30, 2022
USD ($)
Aug. 11, 2021
USD ($)
Apr. 30, 2021
EUR (€)
Debt Instrument [Line Items]                              
Lease completion buyout option, amount       $ 1                      
Long-term debt         $ 35,470,000     $ 38,360,000              
Jireh Semiconductor Incorporated | Sales-Lease Back Transaction with Jireh Semiconductor Incorporated                              
Debt Instrument [Line Items]                              
Debt financing term (in years)         5 years                    
Implied interest rate       7.51% 4.75%                    
Historical cost | €             € 12.0                
Down payment amount | €                             € 6.0
Down payment percent       50.00%                     50.00%
Delivery payment, percent                         40.00%    
Delivery payment, amount                         $ 4,800,000    
Purchase price financing, percent       10.00%                      
Payments for purchase of optional hardware       $ 200,000                      
Outstanding balance         $ 11,000,000                    
Jireh Semiconductor Incorporated | Sales-Lease Back Transaction with Jireh Semiconductor Incorporated | Manufacturing machinery and equipment                              
Debt Instrument [Line Items]                              
Collateral amount         14,800,000                    
Secured Debt | Accounts Receivable Factoring Agreement August 9 2019                              
Debt Instrument [Line Items]                              
Accounts Receivable Factoring Agreement, Reduction Of Maximum Borrowing Capacity                           $ 8,000,000  
Secured Debt | Jireh                              
Debt Instrument [Line Items]                              
Line of credit facility, maximum borrowing capacity   $ 45,000,000                          
Debt instrument, term   5 years 6 months                          
Amount outstanding         36,000,000                    
Proceeds from lines of credit $ 45,000,000                            
Bank Of Communications Limited | Line of Credit | Line Of Credit Maturing December 1 2023                              
Debt Instrument [Line Items]                              
Line of credit facility, maximum borrowing capacity                 $ 20,600,000 ¥ 140,000,000          
Long-Term Line of Credit         0                    
Hongkong And Shanghai Banking Corporation Limited | Secured Debt | Accounts Receivable Factoring Agreement August 9 2019                              
Debt Instrument [Line Items]                              
Basis spread on variable rate     1.75%                        
Accounts receivable factoring agreement, maximum borrowing capacity, percent of net accounts receivable     70.00%                        
Accounts receivable factoring agreement, maximum borrowing capacity     $ 30,000,000                        
Accounts receivable factoring agreement, remaining borrowing capacity         8,000,000                    
Accounts receivable factoring agreement, borrowed amount outstanding         0                    
Industrial And Commercial Bank of China | Foreign Line of Credit                              
Debt Instrument [Line Items]                              
Loan agreements, short-term debt                     $ 10,300,000 ¥ 72,000,000      
China Construction Bank | Line of Credit | Line Of Credit Maturing Septmeber 2025                              
Debt Instrument [Line Items]                              
Line of credit facility, maximum borrowing capacity         6,800,000 ¥ 50,000,000                  
Long-Term Line of Credit         $ 0