v3.26.1
Note 8 - Leases (Details Textual)
$ in Thousands
 1 Months Ended 3 Months Ended
Mar. 31, 2026
USD ($)
Oct. 31, 2021
USD ($)
Mar. 31, 2026
USD ($)
Mar. 31, 2025
USD ($)
Dec. 31, 2025
USD ($)
Dec. 31, 2021
Feb. 28, 2019
Oct. 31, 2014
USD ($)
ft²
Restricted Cash $ 1,352   $ 1,352 $ 1,302        
Reduction of Lease Liability and Right-of-use Asset Due to Lease Modification     1,126 $ 0        
Operating Lease, Liability 8,417 [1]   8,417 [1]   $ 8,065      
Operating Lease, Right-of-Use Asset $ 6,481   $ 6,481   $ 6,278      
Lessee, Operating Lease, Renewal Term (Year) 5 years   5 years          
Operating Lease, Weighted Average Remaining Lease Term (Year) 5 years   5 years          
Operating Lease, Weighted Average Discount Rate, Percent 8.36%   8.36%          
Operating Lease, Payments, Use     $ 400          
Maximum [Member]                
Lessee, Operating Lease, Remaining Lease Term (Year) 6 years   6 years          
Minimum [Member]                
Lessee, Operating Lease, Remaining Lease Term (Year) 1 year   1 year          
Office Space in New York City Leased by FBIO [Member]                
Area of Real Estate Property (Square Foot) | ft²               24,000
Restricted Cash               $ 1,300
Reduction of Lease Liability and Right-of-use Asset Due to Lease Modification     $ 1,100          
Lessee, Operating Lease, Discount Rate             10.25%  
Gansevoort Lease [Member]                
Lessee, Operating Lease, Term of Contract (Year) 5 years   5 years          
Average Annual Rental Payments $ 400              
Lessee, Operating Lease, Discount Rate 8.40%   8.40%          
The North Carolina Lease [Member]                
Lessee, Operating Lease, Term of Contract (Year)   5 years            
Average Annual Rental Payments   $ 200            
Lessee, Operating Lease, Discount Rate           5.65%    
The North Carolina Lease [Member] | Maximum [Member]                
Operating Lease, Expense     $ 100          
[1] As the Company’s leases do not provide an implicit rate, the Company uses its incremental borrowing rate based on the information available at commencement date and considering the term of the lease to determine the present value of lease payments. The Company used the incremental borrowing rate of 10.25% on February 28, 2019, for operating leases that commenced prior to that date through December 31, 2021. The Company used an incremental borrowing rate of 5.65% for the NC lease. The Company used an incremental borrowing rate of 8.4% for the modified Office Agreement operating lease.