Annual report [Section 13 and 15(d), not S-K Item 405]

Income taxes (Narrative) (Details)

v3.26.1
Income taxes (Narrative) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Income taxes    
Minimum ownership interest in subsidiaries for consolidated income tax return 80.00%  
Effective income tax rate 1.90% (0.20%)
Income tax expense $ (620) $ 312
Operating Loss Carryforwards 294,100  
Increase (decrease) in valuation allowance 83,900  
Income tax credits $ 325  
Income tax credits expiration date Dec. 31, 2028  
Unrecognized tax benefits $ 967 3,200
Accrued interest related to uncertain tax positions 100 $ 200
Unrecognized tax benefits impact effective tax rate $ 200  
Income tax examination The NOLs from tax years 2012 through 2024 remain open to examination (and adjustment) by the Internal Revenue Service and state taxing authorities. In addition, due to net operating losses, all federal tax years dating back to 2012 remain open for the assessment of income taxes. The expiration of the statute of limitations for state income and franchise tax returns varies by state.  
Income Tax Effect, US Public Law 119-21 | Cyprium    
Income taxes    
Accelerated amortization period 1 year  
Income Tax Effect, US Public Law 119-21 | Urica    
Income taxes    
Accelerated amortization period 2 years  
Federal    
Income taxes    
Net operating losses (NOLs) $ 659,400  
Net operating losses (NOLs), expiration Dec. 31, 2032  
Income tax credits $ 30,100  
Operating loss carryforwards without expiration 496,100  
State and Local Jurisdiction    
Income taxes    
Net operating losses (NOLs) $ 1,130,700  
Net operating losses (NOLs), expiration Dec. 31, 2026  
Income tax credits $ 5,100  
Operating loss carryforwards without expiration $ 24,200