v3.26.3
Financial Instruments - Schedule Of Financial Instruments That Are Measured At Fair Value On A Recurring Basis (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Dec. 31, 2024
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Total assets $ 508 $ 1,402  
Total liabilities 2,393 555  
Level 1      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Total assets 0 0  
Total liabilities 0 0  
Level 2      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Total assets 508 1,402  
Total liabilities 2,393 555  
Level 3      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Total assets 0 0  
Total liabilities 0 0  
Derivative financial instruments—designated as cash flow hedging instruments      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Derivative financial instruments, Assets 63 1,262  
Derivative financial instruments, Liabilities 18 35  
Derivative financial instruments—designated as cash flow hedging instruments | Level 1      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Derivative financial instruments, Assets 0 0  
Derivative financial instruments, Liabilities 0 0  
Derivative financial instruments—designated as cash flow hedging instruments | Level 2      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Derivative financial instruments, Assets 63 1,262  
Derivative financial instruments, Liabilities 18 35  
Derivative financial instruments—designated as cash flow hedging instruments | Level 3      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Derivative financial instruments, Assets 0 0  
Derivative financial instruments, Liabilities 0 0  
Derivative financial instruments—not designated as hedging instruments      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Derivative financial instruments, Assets 445 140  
Derivative financial instruments, Liabilities 2,375 520  
Derivative financial instruments—not designated as hedging instruments | Level 1      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Derivative financial instruments, Assets 0 0  
Derivative financial instruments, Liabilities 0 0  
Derivative financial instruments—not designated as hedging instruments | Level 2      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Derivative financial instruments, Assets 445 140  
Derivative financial instruments, Liabilities 2,375 520  
Derivative financial instruments—not designated as hedging instruments | Level 3      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Derivative financial instruments, Assets 0 0  
Derivative financial instruments, Liabilities $ 0 0  
HMH Holding BV And Subsidiaries [Member]      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Total assets   1,402 $ 1,713
Derivative financial instruments, Liabilities     4,612
Total liabilities   555 4,612
HMH Holding BV And Subsidiaries [Member] | Level 1      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Total assets   0 0
Derivative financial instruments, Liabilities     0
Total liabilities   0 0
HMH Holding BV And Subsidiaries [Member] | Level 2      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Total assets   1,402 1,713
Derivative financial instruments, Liabilities     4,612
Total liabilities   555 4,612
HMH Holding BV And Subsidiaries [Member] | Level 3      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Total assets [1]   0 0
Derivative financial instruments, Liabilities [1]     0
Total liabilities [1]   0 0
HMH Holding BV And Subsidiaries [Member] | Derivative financial instruments—designated as cash flow hedging instruments      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Derivative financial instruments, Assets   1,262 1,713
Derivative financial instruments, Liabilities   35  
HMH Holding BV And Subsidiaries [Member] | Derivative financial instruments—designated as cash flow hedging instruments | Level 1      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Derivative financial instruments, Assets   0 0
Derivative financial instruments, Liabilities   0  
HMH Holding BV And Subsidiaries [Member] | Derivative financial instruments—designated as cash flow hedging instruments | Level 2      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Derivative financial instruments, Assets   1,262 1,713
Derivative financial instruments, Liabilities   35  
HMH Holding BV And Subsidiaries [Member] | Derivative financial instruments—designated as cash flow hedging instruments | Level 3      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Derivative financial instruments, Assets [1]   0 $ 0
Derivative financial instruments, Liabilities [1]   0  
HMH Holding BV And Subsidiaries [Member] | Derivative financial instruments—not designated as hedging instruments      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Derivative financial instruments, Assets   140  
Derivative financial instruments, Liabilities   520  
HMH Holding BV And Subsidiaries [Member] | Derivative financial instruments—not designated as hedging instruments | Level 1      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Derivative financial instruments, Assets   0  
Derivative financial instruments, Liabilities   0  
HMH Holding BV And Subsidiaries [Member] | Derivative financial instruments—not designated as hedging instruments | Level 2      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Derivative financial instruments, Assets   140  
Derivative financial instruments, Liabilities   520  
HMH Holding BV And Subsidiaries [Member] | Derivative financial instruments—not designated as hedging instruments | Level 3      
Derivative Instruments and Hedging Activities Disclosures [Line Items]      
Derivative financial instruments, Assets [1]   0  
Derivative financial instruments, Liabilities [1]   $ 0  
[1] The fair value (Level 3) of the seller’s receivable against Akastor AS on proceeds from the sales or liquidation of Step Oiltools B.V. (“Step Oiltools”) has been remeasured to zero as of December 31, 2025 and 2024.