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Long-term Debt Payable to Westlake
 3 Months Ended
Mar. 31, 2022
Related Party Transactions [Abstract]  
Long-term Debt Payable to Westlake Long-Term Debt Payable to Westlake
Long-term debt payable to Westlake consists of the following:
March 31,
2022		December 31,
2021
OpCo Revolver (variable interest rate of London Interbank Offered Rate ("LIBOR") plus 2.0%, scheduled maturity of September 25, 2023)
$22,619 $22,619 
MLP Revolver (variable interest rate of LIBOR plus 2.0%, scheduled maturity of March 19, 2023)
377,055 377,055 
Total debt$399,674 $399,674 
Less current debt:
MLP Revolver377,055 — 
Long-term debt, net of current debt$22,619 $399,674 
The weighted average interest rate on all debt was 2.2% and 2.1% at March 31, 2022 and December 31, 2021, respectively.
As of March 31, 2022, the Partnership was in compliance with all of the covenants under the OpCo Revolver and the MLP Revolver.