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Note 7 - Credit Facility and Warrants (Details Textual) - USD ($)
$ / shares in Units, $ in Thousands
Mar. 01, 2022
Dec. 22, 2021
Dec. 23, 2025
Dec. 22, 2025
Sep. 30, 2025
Aug. 29, 2025
Dec. 31, 2024
Feb. 23, 2024
Dec. 22, 2022
Mar. 31, 2022
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)   16,667                
Common Stock, Par or Stated Value Per Share (in dollars per share)   $ 0.0001     $ 0.0001   $ 0.0001      
Warrant Liability         $ 1          
Securities Purchase Agreement [Member] | Private Placement [Member]                    
Proceeds from Issuance or Sale of Equity $ 27,500                  
Forecast [Member] | Share Repurchase Program Third Amendment [Member]                    
Share Repurchase Program, Authorized, Amount     $ 1,500 $ 1,500            
Midcap Warrant [Member]                    
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)   $ 56.4                
Warrants and Rights Outstanding, Term (Year)   10 years                
Common Stock Warrant [Member] | Private Placement [Member]                    
Class Of Warrant Or Right Issued In Period (in shares)                   590,637
Line of Credit [Member] | Midcap Credit Facility [Member]                    
Debt Instrument, Term (Year)   3 years                
Line of Credit Facility, Maximum Borrowing Capacity   $ 40,000           $ 30,000    
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage   0.50%                
Line Of Credit Facility, Maximum Liquidity Requirements During Period   $ 12,500                
Line Of Credit Facility, Maximum Liquidity Requirements At All Other Times   $ 15,000           6,800 $ 15,000  
Line of Credit Facility, Current Borrowing Capacity               17,000    
Line of Credit Facility, Temporary Minimum Liquidity           $ 5,000        
Line of Credit Facility, Temporary Minimum Liquidity After Delivery of Liquidity Certificate           6,800        
Line of Credit Facility, Availability Reserve           2,800        
Line of Credit Facility, Availability Reserve after Reduction Period           $ 1,000        
Line of Credit [Member] | Midcap Credit Facility [Member] | Term Secured Overnight Financing Rate [Member]                    
Debt Instrument, Basis Spread on Variable Rate   0.10%                
Line of Credit [Member] | Midcap Credit Facility [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]                    
Debt Instrument, Basis Spread on Variable Rate   5.50%                
Asset Backed Credit Facility [Member] | Midcap Credit Facility [Member] | Maximum [Member]                    
Debt Instrument, Fee Amount               $ 100