Condensed Consolidated Statements of Income (Unaudited) (USD $)	3 Months Ended
	May 31, 2013	May 31, 2012
Income Statement [Abstract]
Net Sales	$ 183,174,619	$ 127,142,864
Costs and Expenses
Cost of Sales	132,459,556	89,277,551
Selling, General and Administrative	26,686,938	15,356,217
Interest Expense	4,477,687	3,340,166
Net Loss (Gain) On Sale of Property, Plant and Equipment, and Insurance Proceeds	(23,341)	(5,969,081)
Other Expense (Income) - net	(3,828,037)	48,309
Total costs and expenses	159,772,803	102,053,162
Income Before Income Taxes	23,401,816	25,089,702
Income Tax Expense	8,855,033	9,103,762
Net Income	$ 14,546,783	$ 15,985,940
Earnings Per Common Share
Basic Earnings Per Share (usd per share)	$ 0.57	$ 0.63
Diluted Earnings Per Share (usd per share)	$ 0.57	$ 0.63