v3.26.1
Partners' Capital - Change (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2026
Jun. 30, 2025
Increase (decrease) in Partners' Capital            
Balance at beginning of period $ 1,782,295 $ 1,860,222 $ 1,831,460 $ 1,853,533 $ 1,860,222 $ 1,853,533
Balance at beginning of period (in units)   128,428,024     128,428,024  
Comprehensive income:            
Net income 81,548 $ 10,747 61,025 75,560 $ 92,295 136,585
Other comprehensive income (loss) 169 (6,360) 11,194 270 (6,191) 11,464
Comprehensive Income 81,717 4,387 72,219 75,830 86,104 148,049
Settlement of deferred compensation plans   (4,142)   (7,082)    
Common unit-based compensation 2,275 1,667 2,281 1,964    
Distributions on deferred common unit-based compensation (652) (953) (841) (1,247)    
Distributions from consolidated company to noncontrolling interest (2,044) (1,830) (2,731) (1,894)    
Distributions to Partners (77,195) (77,056) (89,898) (89,644)    
Balance at end of period $ 1,786,396 1,782,295 1,812,490 1,831,460 $ 1,786,396 1,812,490
Balance at end of period (in units) 128,658,801       128,658,801  
Accumulated Other Comprehensive Income (Loss)            
Increase (decrease) in Partners' Capital            
Balance at beginning of period $ (7,386) (1,026) (34,833) (35,103) $ (1,026) (35,103)
Comprehensive income:            
Net income     0 0    
Other comprehensive income (loss) 169 (6,360) 11,194 270    
Settlement of deferred compensation plans       0    
Common unit-based compensation     0 0    
Distributions on deferred common unit-based compensation     0 0    
Distributions from consolidated company to noncontrolling interest     0 0    
Distributions to Partners     0 0    
Balance at end of period (7,217) (7,386) (23,639) (34,833) (7,217) (23,639)
Noncontrolling Interest            
Increase (decrease) in Partners' Capital            
Balance at beginning of period 17,444 17,621 20,469 20,786 17,621 20,786
Comprehensive income:            
Net income 1,986 1,653 1,615 1,577    
Other comprehensive income (loss)     0 0    
Settlement of deferred compensation plans       0    
Common unit-based compensation     0 0    
Distributions on deferred common unit-based compensation     0 0    
Distributions from consolidated company to noncontrolling interest (2,044) (1,830) (2,731) (1,894)    
Distributions to Partners     0 0    
Balance at end of period 17,386 17,444 19,353 20,469 17,386 19,353
Limited Partners' Capital            
Increase (decrease) in Partners' Capital            
Balance at beginning of period $ 1,772,237 $ 1,843,627 $ 1,845,824 $ 1,867,850 $ 1,843,627 $ 1,867,850
Balance at beginning of period (in units) 128,658,801 128,428,024 128,428,024 128,061,981 128,428,024 128,061,981
Comprehensive income:            
Net income $ 79,562 $ 9,094 $ 59,410 $ 73,983    
Other comprehensive income (loss)     0 0    
Settlement of deferred compensation plans   $ (4,142)   $ (7,082)    
Settlement of deferred common unit- based compensation plans (in units)   230,777   366,043    
Common unit-based compensation 2,275 $ 1,667 2,281 $ 1,964    
Distributions on deferred common unit-based compensation (652) (953) (841) (1,247)    
Distributions from consolidated company to noncontrolling interest     0 0    
Distributions to Partners (77,195) (77,056) (89,898) (89,644)    
Balance at end of period $ 1,776,227 $ 1,772,237 $ 1,816,776 $ 1,845,824 $ 1,776,227 $ 1,816,776
Balance at end of period (in units) 128,658,801 128,658,801 128,428,024 128,428,024 128,658,801 128,428,024