Consolidated Statements of Earnings (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	May 31, 2014		May 31, 2013		May 31, 2012
Net sales	$ 3,126,426		$ 2,612,244		$ 2,534,701
Cost of goods sold	2,633,907		2,215,601		2,201,833
Gross margin	492,519		396,643		332,868
Selling, general and administrative expense	300,396		258,324		225,069
Impairment of long-lived assets	58,246		6,488		355
Restructuring and other expense (income)	(2,912)		3,293		5,984
Joint venture transactions	1,036		(604)		(150)
Operating income	135,753		129,142		101,610
Other income (expense):
Miscellaneous income	16,963		1,452		2,319
Interest expense	(26,671)		(23,918)		(19,497)
Equity in net income of unconsolidated affiliates	91,456		94,624		92,825
Earnings before income taxes	217,501		201,300		177,257
Income tax expense	57,349		64,465		51,904
Net earnings	160,152		136,835		125,353
Net earnings attributable to noncontrolling interest	8,852	[1]	393	[1]	9,758	[1]
Net earnings attributable to controlling interest	$ 151,300		$ 136,442		$ 115,595
Basic
Average common shares outstanding	68,944		69,301		69,651
Earnings per share attributable to controlling interest	$ 2.19		$ 1.97		$ 1.66
Diluted
Average common shares outstanding	71,664		71,314		70,252
Earnings per share attributable to controlling interest	$ 2.11		$ 1.91		$ 1.65

[1] Net earnings attributable to non-controlling interest are not taxable to Worthington.