Investments (Tables)

12 Months Ended

Dec. 31, 2022

The following table details our investment balances at December 31, 2022 and 2021 (in thousands):


	December 31,
	2022		2021
Joint ventures	$	832,119	$	607,644
Available for sale debt securities	260,139		246,517
Nonmarketable securities	18,760		20,660
Marketable equity securities	39,535		37,187
Total	$	1,150,553	$	912,008

Ownership Positions in Significant Unconsolidated Investments

Our ownership positions in significant unconsolidated investments are shown below:


		December 31,
		2022		2021		2020
*	Windfield Holdings Pty. Ltd. - a joint venture with Sichuan Tianqi Lithium Industries, Inc., that mines lithium ore and produces lithium concentrate	49	%	49	%	49	%
*	Nippon Aluminum Alkyls - a joint venture with Mitsui Chemicals, Inc. that produces aluminum alkyls	50	%	50	%	50	%

*	Nippon Ketjen Company Limited - a joint venture with Sumitomo Metal Mining Company Limited that produces refinery catalysts	50	%	50	%	50	%
*	Eurecat S.A. - a joint venture with Axens Group for refinery catalysts regeneration services	50	%	50	%	50	%
*	Fábrica Carioca de Catalisadores S.A. - a joint venture with Petrobras Quimica S.A. - PETROQUISA that produces catalysts and includes catalysts research and product development activities	50	%	50	%	50	%

Summary of Assets, Liabilities and Results of Operations for Significant Unconsolidated Joint Ventures

The following summary lists the assets, liabilities and results of operations for our significant unconsolidated joint ventures presented herein (in thousands):


	December 31,
	2022		2021
Summary of Balance Sheet Information:
Current assets	$	1,927,791	$	485,730
Noncurrent assets	1,659,692		1,590,958
Total assets	$	3,587,483	$	2,076,688
Current liabilities	$	770,211	$	209,621
Noncurrent liabilities	1,175,773		739,599
Total liabilities	$	1,945,984	$	949,220


	Year Ended December 31,
	2022		2021		2020
Summary of Statements of Income Information:
Net sales	$	4,290,223	$	827,848	$	597,082
Gross profit	$	3,765,304	$	443,129	$	266,026
Income before income taxes	$	3,301,875	$	269,788	$	225,436
Net income	$	2,314,094	$	187,084	$	157,628