v3.26.3
FAIR VALUE MEASUREMENT - Additional information (Details)
$ / shares in Units, € in Thousands, $ in Millions
6 Months Ended 12 Months Ended
Jun. 30, 2026
EUR (€)
item
shares
Jun. 30, 2026
USD ($)
item
$ / shares
shares
Dec. 31, 2025
EUR (€)
Level 3      
FAIR VALUE MEASUREMENT      
Gain loss on FX valuation     € (851)
XJ Harbour HK limited      
FAIR VALUE MEASUREMENT      
Number of shares sold | shares 2,377,964 2,377,964  
Share protection price | $ / shares   $ 2.15  
Group 14 shares | Level 3 | Recurring      
FAIR VALUE MEASUREMENT      
Gain loss on FX valuation € 265    
XJ Harbour derivatives      
FAIR VALUE MEASUREMENT      
Realized gains on derivatives 299    
Unrealized gains on derivatives 132    
XJ Harbour derivatives | Level 3 | Recurring      
FAIR VALUE MEASUREMENT      
Total gain on derivatives 431    
Realized gains on derivatives 299    
Unrealized gains on derivatives € 132    
2028 Convertible Notes - conversion option      
FAIR VALUE MEASUREMENT      
Original debt converted | $   $ 18.0  
Number of conversion | item 9 9  
2028 Convertible Notes - conversion option | Level 3 | Recurring      
FAIR VALUE MEASUREMENT      
Settlements € 8,249