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Fair Value of Financial Instruments - (Details - Financial instruments at fair value)
$ in Thousands
Mar. 31, 2024
USD ($)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]  
Total $ 6,379
Fair Value, Inputs, Level 1 [Member]  
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]  
Total 6,379
Fair Value, Inputs, Level 2 [Member]  
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]  
Total 0
Fair Value, Inputs, Level 3 [Member]  
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]  
Total 0
Cash and Cash Equivalents [Member]  
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]  
Total 6,379
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member]  
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]  
Total 6,379
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member]  
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]  
Total 0
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 3 [Member]  
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]  
Total $ 0