v3.25.1
Note 7 - Line of Credit (Details Textual) - USD ($)
$ in Thousands
Nov. 03, 2023
Mar. 31, 2025
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  
Line of Credit Facility, Sublimit on Maximum Borrowing Capacity 5,300  
Long-Term Line of Credit   $ 0
Line of Credit, Accordion Feature [Member] | HSBC Venture Bank USA Inc. [Member]    
Line of Credit Facility, Maximum Borrowing Capacity $ 20,000  
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage 0.50%  
Line of Credit, Accordion Feature [Member] | HSBC Venture Bank USA Inc. [Member] | Minimum [Member]    
Debt Instrument, Basis Spread on Variable Rate 3.00%  
Line of Credit, Accordion Feature [Member] | HSBC Venture Bank USA Inc. [Member] | Maximum [Member]    
Debt Instrument, Basis Spread on Variable Rate 3.30%