Related Party Transactions (Tables)

12 Months Ended

Dec. 31, 2019

Our consolidated statements of income include sales to and purchases from unconsolidated affiliates in the ordinary course of business as follows (in thousands):



	Year Ended December 31,
	2019		2018		2017
Sales to unconsolidated affiliates	$	20,068	$	35,094	$	29,514
Purchases from unconsolidated affiliates^(a)	$	210,351	$	256,701	$	209,266


(a)	Purchases from unconsolidated affiliates primarily relate to purchases from our Windfield joint venture.

Our consolidated balance sheets include accounts receivable due from and payable to unconsolidated affiliates in the ordinary course of business as follows (in thousands):



	December 31,
	2019		2018
Receivables from related parties	$	7,163	$	14,348
Payables to related parties	$	35,502	$	68,357