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Bank Borrowing - Narrative (Details)
€ in Millions
 1 Months Ended 6 Months Ended
Feb. 16, 2022
USD ($)
Aug. 18, 2021
USD ($)
Aug. 09, 2019
USD ($)
Sep. 30, 2022
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2023
EUR (€)
Sep. 30, 2023
USD ($)
Sep. 30, 2023
CNY (¥)
Jun. 30, 2023
USD ($)
Jan. 31, 2023
USD ($)
Jan. 31, 2023
CNY (¥)
Dec. 31, 2022
USD ($)
Sep. 20, 2022
USD ($)
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         $ 32,568,000       $ 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         $ 10,400,000                        
Jireh Semiconductor Incorporated | Sales-Lease Back Transaction with Jireh Semiconductor Incorporated | Manufacturing machinery and equipment                                  
Debt Instrument [Line Items]                                  
Collateral amount         14,400,000                        
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         33,800,000                        
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]                                  
Line of credit facility, maximum borrowing capacity                         $ 10,300,000 ¥ 72,000,000      
Amount outstanding         0                        
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