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Note 6 - Line of Credit (Details Textual) - USD ($)
$ in Thousands
5 Months Ended
Nov. 03, 2023
Mar. 31, 2024
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] Secured Overnight Financing Rate (SOFR) [Member]  
Revolving Credit Facility [Member] | HSBC Venture Bank USA Inc. [Member]    
Line of Credit Facility, Maximum Borrowing Capacity $ 30,000  
Proceeds from Lines of Credit, Total   $ 0
Line of Credit, Accordion Feature [Member] | HSBC Venture Bank USA Inc. [Member]    
Line of Credit Facility, Maximum Borrowing Capacity $ 20,000  
Revolving Credit Facility with Accordion Feature [Member] | HSBC Venture Bank USA Inc. [Member] | Minimum [Member]    
Debt Instrument, Basis Spread on Variable Rate 3.00%  
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage 0.50%  
Revolving Credit Facility with Accordion Feature [Member] | HSBC Venture Bank USA Inc. [Member] | Maximum [Member]    
Debt Instrument, Basis Spread on Variable Rate 3.25%  
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage 0.55%