Annual report pursuant to Section 13 and 15(d)

Note 13 - Leases (Details Textual)

v3.23.1
Note 13 - Leases (Details Textual)
$ in Millions
1 Months Ended 12 Months Ended
Feb. 29, 2020
USD ($)
ft²
Feb. 29, 2020
USD ($)
ft²
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Mar. 31, 2019
USD ($)
Aug. 31, 2015
ft²
Operating Lease, Payments | $     $ 2.4 $ 2.6    
Hallbergmoos Germany [Member]            
Lessee, Operating Lease, Term of Contract (Year) 12 years 6 months 12 years 6 months        
Hallbergmoos Germany [Member] | Leases Expected to be Delivered by October 2024 [Member]            
Area of Real Estate Property (Square Foot) | ft² 22,300 22,300        
Hallbergmoos Germany [Member] | Leases with First Right of Refusal for Additional Area [Member]            
Area of Real Estate Property (Square Foot) | ft² 13,400 13,400        
Sublease Office Space [Member] | Boston Massachusetts [Member]            
Area of Real Estate Property (Square Foot) | ft²           3,950
Office and Laboratory Space [Member] | Hallbergmoos Germany [Member]            
Area of Real Estate Property (Square Foot) | ft² 105,000 105,000        
Number of Agreement Extension Options 2          
Lessee, Operating Lease, Renewal Term (Month) 60 months 60 months        
Lessee, Operating Lease, Monthly Rent Expense | $   $ 0.2        
Security Deposit | $ $ 0.8 $ 0.8        
Tenant Improvements | $         $ 11.5