Consolidated Statement of Operations (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Feb. 29, 2012	Feb. 28, 2011	Feb. 28, 2010
Net sales	$ 707,062	$ 561,672	$ 550,695
Cost of sales	504,107	437,735	443,944
Gross profit	202,955	123,937	106,751
Operating expenses:
Selling	47,282	34,517	30,147
General and administrative	93,219	67,262	62,854
Engineering and technical support	15,825	11,934	9,781
Acquisition related costs	2,755	1,207	209
Total operating expenses	159,081	114,920	102,991
Operating income (loss)	43,874	9,017	3,760
Other income (expense):
Interest and bank charges	(5,630)	(2,630)	(1,556)
Equity in income of equity investee	4,035	2,905	1,657
Other, net	(3,387)	3,204	7,294
Total other income (expenses), net	(4,982)	3,479	7,395
Income from operations before income taxes	38,892	12,496	11,155
Income tax expense (benefit)	13,243	(10,535)	(11,328)
Net income	$ 25,649	$ 23,031	$ 22,483
Net income per common share (basic)	$ 1.11	$ 1.00	$ 0.98
Net income per common share (diluted)	$ 1.10	$ 1.00	$ 0.98
Weighted-average common shares outstanding (basic)	23,080,081	22,938,754	22,875,651
Weighted-average common shares outstanding (diluted)	23,265,206	23,112,518	22,919,665