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Loans and Line of Credit - Long-Term Loans (Details) - USD ($)
1 Months Ended
Jan. 31, 2024
Mar. 31, 2024
Jan. 30, 2024
Dec. 31, 2023
Long-term Loans        
Maximum borrowing capacity     $ 9,700,000  
Term of loan     5 years  
Interest rate     6.50%  
Line of credit, Non Current   $ 7,000,000.0    
Line of credit, Current   49,000,000.0    
Loan Balance   48,217,000   $ 52,921,000
Chaoyang Xinmei High Purity Semiconductor MaterialsCo. Ltd        
Long-term Loans        
Loan amount       2,100,000
Value of option to repurchase production line       $ 14.00
Long term loan   1,400,000    
Loan Balance   554,000    
Chao Yang Tongmei High Purity Semiconductor Materials Co. Ltd [Member]        
Long-term Loans        
Proceeds from bank loan $ 5,800,000      
Line of credit, Non Current   5,600,000    
Line of credit, Current   277,000    
Long term loan   $ 5,600,000