v3.26.1
Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Statement of Cash Flows [Abstract]    
Cash Flows from Operating Activities $ 258,520 $ 297,379
Property, plant and equipment:    
Capital expenditures (145,704) (153,793)
Change in accounts payable and accrued liabilities (3,282) (11,840)
Proceeds from sale of property, plant and equipment 411 709
Contributions to equity method investments (2,178) (1,391)
Purchase of debt securities 0 (2,127)
Oil & gas reserve business combinations (21,965) 0
Oil & gas reserve asset acquisitions (9,370) (2,740)
Other 938 2,929
Net cash used in investing activities (181,150) (168,253)
Cash Flows from Financing Activities:    
Borrowings under securitization facility 151,000 39,000
Payments under securitization facility (95,000) (39,000)
Payments on equipment financings (6,845) (6,303)
Borrowings under revolving credit facilities 181,000 0
Payments under revolving credit facilities (102,500) 0
Borrowing under long-term debt 5,903 0
Payments on long-term debt (7,031) (7,031)
Payments for tax withholdings related to settlements under deferred compensation plan (4,142) (7,082)
Distributions paid to Partners (155,856) (181,630)
Other (3,938) (9,114)
Net cash used in financing activities (37,409) (211,160)
Effect of exchange rate changes on cash and cash equivalents 21 76
Net Change in Cash and Cash Equivalents 39,982 (81,958)
Cash and Cash Equivalents at Beginning of Period 71,212 136,962
Cash and Cash Equivalents at End of Period 111,194 55,004
Supplemental Non-Cash Activity:    
Accounts payable for purchase of property, plant and equipment 9,620 11,888
Change in property, plant and equipment for reclamation assets 13,002 0
Right-of-use assets acquired by operating lease 0 1,571
Market value of common units issued under deferred compensation plan before tax withholding requirements $ 9,766 $ 17,068