CONSOLIDATED STATEMENTS OF EARNINGS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Aug. 31, 2014	Aug. 31, 2013
Net sales	$ 862,414	$ 692,291
Cost of goods sold	732,907	581,327
Gross margin	129,507	110,964
Selling, general and administrative expense	75,255	71,540
Impairment of long-lived assets	1,950	4,641
Restructuring and other income	(7)	(3,997)
Joint venture transactions	107	142
Operating income	52,202	38,638
Other income (expense):
Miscellaneous income	323	10,937
Interest expense	(9,516)	(6,240)
Equity in net income of unconsolidated affiliates	27,924	26,951
Earnings before income taxes	70,933	70,286
Income tax expense	22,113	13,933
Net earnings	48,820	56,353
Net earnings attributable to noncontrolling interest	4,652	1,796
Net earnings attributable to controlling interest	$ 44,168	$ 54,557
Basic
Average common shares outstanding	67,567	69,601
Earnings per share attributable to controlling interest	$ 0.65	$ 0.78
Diluted
Average common shares outstanding	69,738	72,083
Earnings per share attributable to controlling interest	$ 0.63	$ 0.76
Common shares outstanding at end of period	67,424	69,373
Cash dividends declared per share	$ 0.18	$ 0.15