Investments (Tables)

12 Months Ended

Dec. 31, 2014

Investments [Abstract]

Investment Balances

The following table details our investment balances at December 31, 2014 and 2013 (in thousands).

	December 31,
	2014		2013
Joint ventures	$	169,891	$	187,843
Nonmarketable securities	177		534
Marketable equity securities	23,974		23,801
Total	$	194,042	$	212,178

Ownership Positions in Significant Unconsolidated Investments

Our ownership positions in significant unconsolidated investments are shown below:

		December 31,
		2014		2013		2012
*	Nippon Aluminum Alkyls - a joint venture with Mitsui Chemicals, Inc. that produces aluminum alkyls	50	%	50	%	50	%
*	Magnifin Magnesiaprodukte GmbH & Co. KG - a joint venture with Radex Heraklith Industriebeteiligung AG that produces specialty magnesium hydroxide products	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 IFP Investissements 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	%
*	Stannica, LLC - a joint venture with PMC Group, Inc. that produces tin stabilizers	50	%	50	%	50	%

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

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

	December 31,
	2014		2013
Summary of Balance Sheet Information:
Current assets	$	246,795	$	313,446
Noncurrent assets	181,509		198,776
Total assets	$	428,304	$	512,222
Current liabilities	$	81,613	$	100,469
Noncurrent liabilities	63,585		77,734
Total liabilities	$	145,198	$	178,203

	Year Ended December 31,
	2014		2013		2012
Summary of Statements of Income Information:
Net sales	$	609,728	$	598,459	$	601,233
Gross profit	$	167,156	$	169,406	$	165,650
Income before income taxes	$	102,764	$	101,652	$	105,329
Net income	$	72,247	$	71,294	$	71,561