Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Current assets
Cash and cash equivalents	$ 36,579	$ 58,316
Receivable under the Investment Management Agreement—Westlake Corporation ("Westlake")	43,924	134,557
Accounts receivable, net—third parties	12,817	11,576
Inventories	3,261	4,058
Prepaid expenses and other current assets	24	444
Total current assets	156,524	240,926
Property, plant and equipment, net	902,062	903,588
Goodwill	5,814	5,814
Deferred charges and other assets, net	242,787	137,628
Total assets	1,307,187	1,287,956
Current liabilities
Accrued and other liabilities	36,263	16,920
Total current liabilities	72,906	55,372
Deferred income taxes	1,581	1,546
Other liabilities	1,861	2,050
Total liabilities	476,022	458,642
Commitments and contingencies (Note 12)
EQUITY
Total Westlake Chemical Partners LP partners' capital	262,413	276,129
Noncontrolling interest in Westlake Chemical OpCo LP ("OpCo")	568,752	553,185
Total equity	831,165	829,314
Total liabilities and equity	1,307,187	1,287,956
Publicly and Privately Held | Common units
EQUITY
Common unitholders	$ 463,109	$ 471,328
Units issued (in shares)	21,116,326	21,116,326
Units outstanding (in shares)	21,116,326	21,116,326
Westlake
EQUITY
General partner—Westlake	$ (242,572)	$ (242,572)
Westlake | Common units
EQUITY
Common unitholders	$ 41,876	$ 47,373
Units issued (in shares)	14,122,230	14,122,230
Units outstanding (in shares)	14,122,230	14,122,230
Affiliated Entity
Current assets
Accounts receivable, net—Westlake	$ 59,919	$ 31,975
Current liabilities
Accounts payable	8,572	20,744
Affiliated Entity | Westlake
Current liabilities
Long-term debt payable to Westlake	399,674	399,674
Nonrelated Party
Current assets
Accounts receivable, net—third parties	12,817	11,576
Current liabilities
Accounts payable	$ 28,071	$ 17,708