Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $)	6 Months Ended
	Aug. 31, 2013	Aug. 31, 2012
Cash Flows From Operating Activities:
Net Income	$ 30,909,552	$ 31,858,877
Adjustments To Reconcile Net Income To Net Cash Provided By Operating Activities:
Provision For Doubtful Accounts	(68,758)	349,165
Amortization and Depreciation	21,048,913	13,163,130
Deferred Income Tax Expense	3,665,345	1,544,614
Net Loss (Gain) On Insurance Settlement or On Sale of Property, Plant & Equipment	(882,917)	(5,951,688)
Amortization of Deferred Borrowing Costs	663,699	141,037
Share Based Compensation Expense	2,512,547	2,434,487
Effects of Changes In Assets & Liabilities:
Accounts Receivable	20,437,080	(11,406,075)
Inventories	(73,460)	(2,344,607)
Prepaid Expenses and Other	(2,876,687)	(2,123,758)
Other Assets	(4,020,907)	87,805
Net Change In Billings Related To Costs and Estimated Earnings On Uncompleted Contracts	(6,465,886)	4,612,468
Accounts Payable	(80,893)	738,974
Other Accrued Liabilities and Income Taxes Payable	(9,584,151)	(2,938,767)
Net Cash Provided By Operating Activities	55,183,477	30,165,662
Cash Flows Used For Investing Activities:
Proceeds From Sale Or Insurance Settlement of Property, Plant, and Equipment	888,278	8,496,630
Purchase of Property, Plant and Equipment	(23,847,378)	(12,561,636)
Acquisition of Subsidiaries, Net of Cash Acquired	(275,702,030)	(77,044,293)
Net Cash From Investing Activities	(298,661,130)	(81,109,299)
Cash Flows From Financing Activities:
Proceeds from Stock Options Exercised	0	15,781
Excess Tax Benefits From Stock Options and Stock Appreciation Rights	1,188,234	774,897
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	(15,223,214)	(18,135,866)
Debt Acquisition Costs	(5,880,539)
Payments of Dividends	(7,134,272)	(6,318,886)
Net Cash Used In Financing Activities	229,950,209	(23,664,074)
Effect of Exchange Rate Changes on Cash	(86,449)	21,471
Net Increase (Decrease) In Cash & Cash Equivalents	(13,613,893)	(74,586,240)
Cash & Cash Equivalents At Beginning of Period	55,597,751	143,302,666
Cash & Cash Equivalents At End of Period	41,983,858	68,716,426
Supplemental Disclosures
Cash Paid For Interest	8,041,592	6,773,789
Cash Paid For Income Taxes	$ 13,738,489	$ 15,861,484