Condensed Consolidated Statements of Income (Unaudited) (USD $)	3 Months Ended
	May 31, 2014	May 31, 2013
Income Statement [Abstract]
Net Sales	$ 216,126,392	$ 183,174,619
Costs and Expenses
Cost of Sales	160,737,654	132,459,556
Gross Profit	55,388,738	50,715,063
Selling, General and Administrative	27,541,286	26,686,938
Operating Income (Loss)	27,847,452	24,028,125
Interest Expense	4,208,545	4,477,687
Net Loss (Gain) On Sale of Property, Plant and Equipment, and Insurance Proceeds	(26,563)	(23,341)
Other Expense (Income) - net	(31,049)	(3,828,037)
Income Before Income Taxes	23,696,519	23,401,816
Income Tax Expense	8,771,128	8,855,033
Net Income	$ 14,925,391	$ 14,546,783
Earnings Per Common Share
Basic Earnings Per Share (usd per share)	$ 0.58	$ 0.57
Diluted Earnings Per Share (usd per share)	$ 0.58	$ 0.57