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ASSET RETIREMENT OBLIGATIONS
 12 Months Ended
Dec. 31, 2025
Asset Retirement Obligation Disclosure [Abstract]  
ASSET RETIREMENT OBLIGATIONS ASSET RETIREMENT OBLIGATIONS
AROs at December 31, 2025 and 2024 were (in thousands): 
 20252024
Asset retirement obligations  $16,909 $14,109 
Less: Asset retirement obligations due within one year (1)  
2,291 747 
Long-term asset retirement obligations (2)
$14,618 $13,362 
(1)
Classified as a current liability on the consolidated balance sheets, under the caption “Other current liabilities.” Balance at December 31, 2025 related to remediation work planned for 2026.
(2)
Classified as a long-term liability on the consolidated balance sheets, under the caption “Other noncurrent liabilities.” Balance at December 31, 2025.
 
Total accretion expense related to AROs was $1.1 million, $1.1 million and $1.1 million during the years ended December 31, 2025, 2024 and 2023, respectively.
 
During the years ended December 31, 2025, 2024 and 2023, our ARO changed as follows (in thousands): 
 202520242023
Balance as of January 1$14,109 $16,215 $18,113 
Accretion of discount1,145 1,112 1,104 
New obligations1,386 — — 
Change in estimates of existing obligations 186 20 1,366 
Settlement of obligations(638)(1,936)(4,756)
Foreign currency translation 721 (1,302)388 
Balance as of December 31$16,909 $14,109 $16,215