Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $)	6 Months Ended
	Aug. 31, 2014	Aug. 31, 2013
Cash Flows From Operating Activities:
Net Income	$ 28,694,101	$ 30,909,552
Adjustments To Reconcile Net Income To Net Cash Provided By Operating Activities:
Provision For Doubtful Accounts	(63,469)	(68,758)
Amortization and Depreciation	23,370,992	21,048,913
Deferred Income Tax Expense	(1,049,609)	3,665,345
Property, Plant and Equipment, Disposals	2,651,705
Net Loss (Gain) On Insurance Settlement or On Sale of Property, Plant & Equipment	(23,501)	(882,917)
Amortization of Deferred Borrowing Costs	723,208	663,699
Share Based Compensation Expense	2,638,404	2,512,547
Effects of Changes In Assets & Liabilities:
Accounts Receivable	3,891,888	20,437,080
Inventories	(7,199,337)	(73,460)
Prepaid Expenses and Other	1,064,401	(2,876,687)
Other Assets	(139,928)	(4,020,907)
Net Change In Billings Related To Costs and Estimated Earnings On Uncompleted Contracts	(1,286,116)	(6,465,886)
Accounts Payable	10,406,700	(80,893)
Other Accrued Liabilities and Income Taxes Payable	(9,853,208)	(9,584,151)
Net Cash Provided By Operating Activities	53,826,231	55,183,477
Cash Flows Used For Investing Activities:
Proceeds From Sale Or Insurance Settlement of Property, Plant, and Equipment	65,502	888,278
Purchase of Property, Plant and Equipment	(11,462,291)	(23,847,378)
Acquisition of Subsidiaries, Net of Cash Acquired	(10,500,000)	(275,702,030)
Net Cash From Investing Activities	(21,896,789)	(298,661,130)
Cash Flows From Financing Activities:
Excess Tax Benefits From Stock Options and Stock Appreciation Rights	381,322	1,188,234
Proceeds from Revolving Loan	10,891,193	197,000,000
Payments on Revolving Loan	(5,000,000)	(15,000,000)
Proceeds on Long Term Debt	0	75,000,000
Payments on Long Term Debt	(17,098,214)	(15,223,214)
Debt Acquisition Costs	0	(5,880,539)
Payments of Dividends	(7,180,832)	(7,134,272)
Net Cash Used In Financing Activities	(18,006,531)	229,950,209
Effect of Exchange Rate Changes on Cash	139,211	(86,449)
Net Increase (Decrease) In Cash & Cash Equivalents	14,062,122	(13,613,893)
Cash & Cash Equivalents At Beginning of Period	27,564,533	55,597,751
Cash & Cash Equivalents At End of Period	41,626,655	41,983,858
Supplemental Disclosures
Cash Paid For Interest	8,076,193	8,041,592
Cash Paid For Income Taxes	$ 8,683,759	$ 13,738,489