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Note 3 - Long-term Debt (Details Textual) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended
Sep. 30, 2024
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Nov. 13, 2019
Interest Expense, Operating and Nonoperating   $ 1,136 $ 1,163    
Amortization of Debt Discount (Premium)   118 $ 294    
Accrued Liabilities, Current   7,746   $ 9,408  
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] Secured Overnight Financing Rate (SOFR) [Member]        
Liability, Interest and Exit Fees [Member]          
Accrued Liabilities, Current   $ 431   $ 425  
SWK Credit Agreement [Member] | SWK Holdings Corporation [Member]          
Debt Instrument, Face Amount         $ 10,000
The Amended Agreement [Member] | SWK Holdings Corporation [Member]          
Line of Credit Facility, Maximum Borrowing Capacity $ 30,000        
Debt Instrument, Basis Spread on Variable Rate 6.75%        
Debt Instrument, Periodic Payment, Principal $ 3,000        
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid $ 9,000        
Debt Instrument, Exit Fee as a Percentage of Outstanding Amounts 5.00%