Fair Value Measurements Fair Value Hierarchy (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended
	Nov. 30, 2014	Nov. 30, 2013 Rate	Nov. 30, 2014 Rate	Nov. 30, 2013	Feb. 28, 2015	Feb. 28, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest Income (Expense), Nonoperating, Net	$ 144	$ 252	$ 282	$ 524
Rental income	305	417	896	1,138
Cash and Cash Equivalents, Fair Value Disclosure	11,056		11,056			10,603
Foreign Currency Contracts, Liability, Fair Value Disclosure						(963)
Foreign Currency Contract, Asset, Fair Value Disclosure	892		892
Derivative Assets	892		892			(963)
Trading Securities, Fair Value Disclosure	4,489		4,489			4,234
Available-for-sale Securities, Fair Value Disclosure	3		3			3
Other investment at cost	8,953		8,953			9,865	[1]
Investments, Fair Value Disclosure	13,445		13,445			14,102
Gain (Loss) on Fair Value Hedge Ineffectiveness, Net	85	(84)	121	(114)
Effective Income Tax Rate Reconciliation, Percent		31.40%	10.80%		46.10%
Unrecognized Tax Benefits, Period Increase (Decrease)	6,831
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	11,056		11,056			10,603
Foreign Currency Contracts, Liability, Fair Value Disclosure						0
Foreign Currency Contract, Asset, Fair Value Disclosure	0		0
Derivative Assets	0		0			0
Trading Securities, Fair Value Disclosure	4,489		4,489			4,234
Available-for-sale Securities, Fair Value Disclosure	3		3			3
Other investment at cost	0		0			0	[1]
Investments, Fair Value Disclosure	4,492		4,492			4,237
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	0		0			0
Foreign Currency Contracts, Liability, Fair Value Disclosure						(963)
Foreign Currency Contract, Asset, Fair Value Disclosure	892		892
Derivative Assets	892		892			(963)
Trading Securities, Fair Value Disclosure	0		0			0
Available-for-sale Securities, Fair Value Disclosure	0		0			0
Other investment at cost	0		0			0	[1]
Investments, Fair Value Disclosure	$ 0		$ 0			$ 0

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