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Financial Instruments and Risk Management (Details 3) (Designated as cash flow hedging instruments) In Thousands, unless otherwise specified	Aug. 31, 2012 Accrued Expenses and Other Current Liabilities USD ($)	Feb. 29, 2012 Accrued Expenses and Other Current Liabilities USD ($)	Aug. 31, 2012 Other Liabilities, Noncurrent USD ($)	Feb. 29, 2012 Other Liabilities, Noncurrent USD ($)	Aug. 31, 2012 Prepaid Expenses and Other Current Assets USD ($)	Aug. 31, 2012 Foreign currency contracts Canadian CAD	Feb. 29, 2012 Foreign currency contracts Canadian CAD	Aug. 31, 2012 Foreign currency contracts Canadian Accrued Expenses and Other Current Liabilities USD ($)	Feb. 29, 2012 Foreign currency contracts Canadian Accrued Expenses and Other Current Liabilities USD ($)	Aug. 31, 2012 Foreign currency contracts Euros EUR (€)	Aug. 31, 2012 Foreign currency contracts Euros Accrued Expenses and Other Current Liabilities USD ($)	Aug. 31, 2012 Foreign currency contracts Pounds GBP (£)	Aug. 31, 2012 Foreign currency contracts Pounds Accrued Expenses and Other Current Liabilities USD ($)	Aug. 31, 2012 Foreign currency swaps Canadian CAD	Aug. 31, 2012 Foreign currency swaps Canadian Prepaid Expenses and Other Current Assets USD ($)	Aug. 31, 2012 Interest rate swaps USD ($)	Feb. 29, 2012 Interest rate swaps USD ($)	Aug. 31, 2012 Interest rate swaps Accrued Expenses and Other Current Liabilities USD ($)	Feb. 29, 2012 Interest rate swaps Accrued Expenses and Other Current Liabilities USD ($)	Aug. 31, 2012 Interest rate swaps Other Liabilities, Noncurrent USD ($)	Feb. 29, 2012 Interest rate swaps Other Liabilities, Noncurrent USD ($)
Fair values of derivative instruments in the consolidated balance sheet
Notional Amount, sell foreign currency						7,000	7,000			€ 10,000		£ 4,500
Notional Amount, purchase foreign currency														2,400
Notional Amount																75,000	75,000
Derivative Liabilities	3,896	3,694	3,574	5,022				209	163		104		9					3,574	3,531	3,574	5,022
Derivative assets					$ 36										$ 36

Fair value of derivative asset, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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- Definition

Fair value of derivative liability, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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