CONSOLIDATED STATEMENTS OF EARNINGS (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	May 31, 2013	May 31, 2012
Income Statement [Abstract]
Net sales	$ 138,466	$ 142,528
Cost of goods sold	102,671	114,279
Gross profit margin	35,795	28,249
Selling, general and administrative	22,205	22,026
Gain from disposal of assets	(7)	(4)
Income from operations	13,597	6,227
Other income (expense)
Interest expense	(251)	(469)
Other, net	157	350
Total other expense	(94)	(119)
Earnings before income taxes	13,503	6,108
Provision for income taxes	4,997	2,229
Net earnings	$ 8,506	$ 3,879
Weighted average common shares outstanding
Basic	26,038,068	25,963,369
Diluted	26,055,869	25,983,907
Per share amounts
Net earnings - basic	$ 0.33	$ 0.15
Net earnings - diluted	$ 0.33	$ 0.15
Cash dividends per share		$ 0.175