Quarterly Financial Information (Unaudited)

12 Months Ended

Dec. 31, 2019

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Information (Unaudited)



	Three Months Ended
	March 31, 2019		June 30, 2019		September 30, 2019		December 31, 2019
Net sales	$	299,086	$	270,062	$	249,925	$	272,798
Gross profit	90,654		91,958		93,219		103,597
Income from operations	83,681		84,319		86,397		95,753
Net income	78,396		80,110		82,479		91,910
Net income attributable to Westlake Chemical Partners LP	14,955		13,733		14,922		17,371
Net income attributable to Westlake Chemical Partners LP⁽¹⁾
Basic and diluted earnings per common unitholder	$	0.46	$	0.39	$	0.42	$	0.49
Weighted average limited partner units outstanding (basic and diluted)	32,345,398		35,188,189		35,188,189		35,191,487

	Three Months Ended
	March 31, 2018		June 30, 2018		September 30, 2018		December 31, 2018
Net sales	$	284,272	$	301,975	$	363,650	$	335,725
Gross profit	92,505		97,118		93,907		93,629
Income from operations	85,372		89,743		87,998		86,456
Net income	80,714		84,476		83,799		81,582
Net income attributable to Westlake Chemical Partners LP	12,295		12,757		12,412		11,883
Net income attributable to Westlake Chemical Partners LP
Basic and diluted earnings per common unitholder	$	0.36	$	0.40	$	0.38	$	0.37
Weighted average limited partner units outstanding (basic and diluted)	32,237,266		32,237,266		32,242,210		32,247,371

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(1)

Basic and diluted earnings per common unit ("EPU") for each quarter is computed using the weighted average units outstanding during that quarter, while EPU for the year is computed using the weighted average units outstanding for the year. As a result, the sum of the EPU for each of the four quarters may not equal the EPU for the year.