XML 38 R24.htm IDEA: XBRL DOCUMENT v3.22.0.1
Supplemental Balance Sheet Information
 12 Months Ended
Dec. 31, 2021
Balance Sheet Related Disclosures [Abstract]  
Supplemental Balance Sheet Information SUPPLEMENTAL BALANCE SHEET INFORMATION
    Components of "Intangibles and other assets, net" at December 31, 2021 and 2020 were as follows:
 20212020
Catalyst and turnaround costs$687 $803 
Other intangible assets358 586 
Other1,153 1,416 
 $2,198 $2,805 

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 included in continuing operations was $4,085, $5,235, and $5,797, for the years ended December 31, 2021, 2020 and 2019, respectively.

Estimated amortization expense for the years subsequent to December 31, 2021 are as follows: 2022 - $4,403; 2023 - $661; 2024 - $266; 2025 - $84; 2026 - $1; subsequent years - $0.
Components of "Other accrued liabilities" at December 31, 2021 and 2020 were as follows:
 20212020
Accrued interest$15,135 $16,104 
Asset retirement obligations261 1,692 
Property and other taxes payable4,631 4,869 
Accrued payroll2,973 3,244 
Operating lease liabilities6,600 7,529 
Other250 969 
 $29,850 $34,407 

The schedule below summarizes the changes in our asset retirement obligations:
 Year Ended December 31,
 20212020
 (In thousands)
Beginning asset retirement obligations$8,759 $8,936 
Revisions to existing liabilities 1
— 918 
Accretion expense375 410 
Liabilities settled(62)(1,505)
Ending asset retirement obligations9,072 8,759 
Current portion of asset retirement obligations 2
(261)(1,692)
Long-term portion of asset retirement obligations 3
$8,811 $7,067 

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 current 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.