v3.26.1
Consolidated Statements of Operations - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Total net sales $ 297,100 $ 297,119 $ 602,775 $ 534,748
Cost of sales 202,295 199,587 414,211 383,135
Gross profit 94,805 97,532 188,564 151,613
Selling, general and administrative expenses 7,494 6,300 14,684 13,774
Income from operations 87,311 91,232 173,880 137,839
Other income (expense)        
Interest expense—Westlake (5,119) (5,907) (10,204) (11,444)
Other income, net 348 675 696 2,021
Income before income taxes 82,540 86,000 164,372 128,416
Provision for income taxes 178 205 355 312
Net income 82,362 85,795 164,017 128,104
Less: Net income attributable to noncontrolling interest in OpCo 68,124 71,237 135,610 108,598
Net income attributable to Westlake Chemical Partners LP and limited partners' interest in net income $ 14,238 $ 14,558 $ 28,407 $ 19,506
Net income per limited partner unit attributable to Westlake Chemical Partners LP (basic and diluted)        
Weighted average limited partner units outstanding (basic and diluted) (in units) 35,245,879 35,238,556 35,245,879 35,238,556
Common units        
Other income (expense)        
Net income attributable to Westlake Chemical Partners LP and limited partners' interest in net income $ 14,238 $ 14,558 $ 28,407 $ 19,506
Net income per limited partner unit attributable to Westlake Chemical Partners LP (basic and diluted)        
Common units (basic) (in usd per share) $ 0.40 $ 0.41 $ 0.81 $ 0.55
Common units (diluted) (in usd per share) $ 0.40 $ 0.41 $ 0.81 $ 0.55
Weighted average limited partner units outstanding (basic and diluted) (in units) 35,245,879 35,238,556 35,245,879 35,238,556
Common units | Westlake        
Net income per limited partner unit attributable to Westlake Chemical Partners LP (basic and diluted)        
Weighted average limited partner units outstanding (basic and diluted) (in units) 14,122,230 14,122,230 14,122,230 14,122,230
Publicly and Privately Held | Common units        
Net income per limited partner unit attributable to Westlake Chemical Partners LP (basic and diluted)        
Weighted average limited partner units outstanding (basic and diluted) (in units) 21,123,649 21,116,326 21,123,649 21,116,326
Affiliated Entity        
Net co-products, ethylene and other sales—third parties $ 238,030 $ 269,076 $ 501,121 $ 459,857
Affiliated Entity | Westlake        
Selling, general and administrative expenses 6,618 5,276 13,037 11,707
Other income (expense)        
Interest expense—Westlake (5,119) (5,907) (10,204) (11,444)
Nonrelated Party        
Net co-products, ethylene and other sales—third parties $ 59,070 $ 28,043 $ 101,654 $ 74,891