XML 37 R22.htm IDEA: XBRL DOCUMENT v3.25.0.1
Supplemental Balance Sheet Information
 12 Months Ended
Dec. 31, 2024
Balance Sheet Related Disclosures [Abstract]  
Supplemental Balance Sheet Information SUPPLEMENTAL BALANCE SHEET INFORMATION
    Components of "Intangibles and other assets, net" at December 31, 2024 and 2023 were as follows:
 20242023
Catalyst and turnaround costs$254 $701 
Other intangible assets26 55 
Other1,229 1,283 
 $1,509 $2,039 

Other intangible assets consist of technology-based assets.

Amortization expense, included in "Depreciation and amortization" on the Partnership's Consolidated Statements of Operations includes amortization of intangible assets, turnaround expenses, and deferred charges. Aggregate amortization expense was $9,050, $5,006, and $5,713, for the years ended December 31, 2024, 2023 and 2022, respectively.

Estimated amortization expense for the years subsequent to December 31, 2024 are as follows: 2025 - $9,181; 2026 - $243; 2027 - $0; 2028 - $0; 2029 - $0; subsequent years - $0.
Components of "Other accrued liabilities" at December 31, 2024 and 2023 were as follows:
 20242023
Accrued interest$17,899 $17,956 
Asset retirement obligations— 25 
Property and other taxes payable4,043 4,348 
Accrued payroll5,187 4,136 
Operating lease liabilities19,707 14,901 
Other44 133 
 $46,880 $41,499 

The schedule below summarizes the changes in our asset retirement obligations:
 Year Ended December 31,
 20242023
 (In thousands)
Beginning asset retirement obligations$5,182 $4,992 
Revisions to existing liabilities 1
— — 
Accretion expense131 191 
Liabilities settled— (1)
Ending asset retirement obligations5,313 5,182 
Current portion of asset retirement obligations 2
— (25)
Long-term portion of asset retirement obligations 3
$5,313 $5,157 

1 Several factors are considered in the annual review process, including inflation rates, current estimates for removal cost, discount rates, and the estimated remaining useful life of the assets.

2 The current portion of asset retirement obligations is included in "Other accrued liabilities" on the Partnership's Consolidated Balance Sheets.

3 The non-current portion of asset retirement obligations is included in "Other long-term obligations" on the Partnership's Consolidated Balance Sheets.