Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $)	3 Months Ended
	May 31, 2013	May 31, 2012
Cash Flows From Operating Activities:
Net Income	$ 14,546,783	$ 15,985,940
Adjustments To Reconcile Net Income To Net Cash Provided By Operating Activities:
Provision For Doubtful Accounts	(89,887)	342,542
Amortization and Depreciation	10,065,220	5,814,927
Deferred Income Tax Expense	2,254,920	1,567,655
Net Loss (Gain) On Insurance Settlement or On Sale of Property, Plant & Equipment	(23,341)	(5,969,081)
Amortization of Deferred Borrowing Costs	280,025	72,256
Share Based Compensation Expense	1,607,220	1,603,004
Effects of Changes In Assets & Liabilities:
Accounts Receivable	27,931,086	4,112,905
Inventories	(4,826,240)	(4,650,527)
Prepaid Expenses and Other	(3,318,159)	(2,093,721)
Other Assets	(4,004,609)	13,182
Net Change In Billings Related To Costs and Estimated Earnings On Uncompleted Contracts	(6,451,003)	(976,186)
Accounts Payable	412,684	1,535,582
Other Accrued Liabilities and Income Taxes Payable	1,493,841	(1,134,000)
Net Cash Provided By Operating Activities	39,878,540	16,224,478
Cash Flows Used For Investing Activities:
Proceeds From Sale Or Insurance Settlement of Property, Plant, and Equipment	28,662	9,331
Purchase of Property, Plant and Equipment	(11,607,540)	(3,489,235)
Acquisition of Subsidiaries, Net of Cash Acquired	(276,599,990)	0
Net Cash From Investing Activities	(288,178,868)	(3,479,904)
Cash Flows From Financing Activities:
Excess Tax Benefits From Stock Options and Stock Appreciation Rights	1,114,728	604,503
Proceeds from Revolving Loan	197,000,000
Payments on Revolving Loan	(15,000,000)
Proceeds on Long Term Debt	75,000,000
Payments on Long Term Debt	(14,285,714)	(14,285,714)
Debt Acquisition Costs	(5,880,539)
Payments of Dividends	(3,566,265)	(3,156,259)
Net Cash Used In Financing Activities	234,382,210	(16,837,470)
Effect of Exchange Rate Changes on Cash	(44,515)	108,044
Net Increase (Decrease) In Cash & Cash Equivalents	(13,962,633)	(3,984,852)
Cash & Cash Equivalents At Beginning of Period	55,597,751	143,302,666
Cash & Cash Equivalents At End of Period	41,635,118	139,317,814
Supplemental Disclosures
Cash Paid For Interest	2,821,579	3,270,394
Cash Paid For Income Taxes	$ 403,372	$ 718,626