Investments (Tables)

12 Months Ended

Dec. 31, 2021

Investments [Abstract]

Investment Balances

The following table details our investment balances at December 31, 2021 and 2020 (in thousands):

	December 31,
	2021		2020
Joint ventures	$	593,344	$	604,964
Available for sale debt securities	246,517		—
Nonmarketable securities	20,660		14,171
Marketable equity securities	37,187		37,109
Total	$	897,708	$	656,244

Ownership Positions in Significant Unconsolidated Investments

Our ownership positions in significant unconsolidated investments are shown below:

		December 31,
		2021		2020		2019
*	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,
	2021		2020
Summary of Balance Sheet Information:
Current assets	$	485,730	$	449,441
Noncurrent assets	1,590,958		1,590,204
Total assets	$	2,076,688	$	2,039,645
Current liabilities	$	209,621	$	116,136
Noncurrent liabilities	739,599		769,114
Total liabilities	$	949,220	$	885,250

	Year Ended December 31,
	2021		2020		2019
Summary of Statements of Income Information:
Net sales	$	827,848	$	597,082	$	910,891
Gross profit	$	443,129	$	266,026	$	496,150
Income before income taxes	$	269,788	$	225,436	$	384,690
Net income	$	187,084	$	157,628	$	229,733