v3.26.3
Consolidated Statements of Comprehensive Income (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Revenues and other income        
Equity in earnings (loss) of Sisecam Wyoming $ (4,126) $ (2,390) $ (16,859) $ 4,746
Gain on asset sales and disposals 5 906 49 1,882
Total revenues and other income 44,820 49,931 132,283 160,570
Operating expenses        
Operating and maintenance expenses 5,540 7,654 17,384 18,589
Depreciation, depletion and amortization 6,526 3,868 25,271 11,611
General and administrative expenses 5,660 5,725 15,714 18,154
Asset impairments 0 0 0 20
Total operating expenses 17,726 17,247 58,369 48,374
Income from operations 27,094 32,684 73,914 112,196
Interest expense, net (552) (1,779) (2,577) (6,827)
Net income 26,542 30,905 71,337 105,369
Net income attributable to common unitholders 26,011 30,287 69,910 103,262
Net income attributable to the general partner $ 531 $ 618 $ 1,427 $ 2,107
Net income per common unit (see Note 4)        
Basic (in dollars per share) $ 1.96 $ 2.31 $ 5.28 $ 7.87
Diluted (in dollars per share) $ 1.95 $ 2.28 $ 5.24 $ 7.77
Net income $ 26,542 $ 30,905 $ 71,337 $ 105,369
Comprehensive income (loss) from unconsolidated investment and other 847 (2,391) 1,611 (545)
Comprehensive income 27,389 28,514 72,948 104,824
Mineral Rights Segment [Member]        
Operating expenses        
Depreciation, depletion and amortization 5,800 3,800 21,300 11,000
Royalty and Other Mineral Rights [Member] | Mineral Rights Segment [Member]        
Revenues and other income        
Revenues 46,989 49,615 139,405 145,170
Transportation and Processing Services [Member] | Mineral Rights Segment [Member]        
Revenues and other income        
Revenues $ 1,952 $ 1,800 $ 9,688 $ 8,772