Fair Value Measurements Fair Value Hierarchy (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Aug. 31, 2014	Aug. 31, 2013	Aug. 31, 2014	Aug. 31, 2013	Feb. 28, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	$ 9,401		$ 9,401		$ 10,603
Foreign Currency Contract, Asset, Fair Value Disclosure	324		324
Foreign Currency Cash Flow Hedge Derivative at Fair Value, Net					(963)
Derivative Assets	324		324		(963)
Trading Securities, Fair Value Disclosure	4,293		4,293		4,234
Available-for-sale Securities, Fair Value Disclosure	3		3		3
Other investment at cost	9,217		9,217		9,865	[1]
Investments, Fair Value Disclosure	13,513		13,513		14,102
Gain (Loss) on Fair Value Hedge Ineffectiveness, Net	49	(33)	36	(30)
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	9,401		9,401		10,603
Foreign Currency Contract, Asset, Fair Value Disclosure	0		0
Foreign Currency Cash Flow Hedge Derivative at Fair Value, Net					0
Derivative Assets	0		0		0
Trading Securities, Fair Value Disclosure	4,293		4,293		4,234
Available-for-sale Securities, Fair Value Disclosure	3		3		3
Other investment at cost	0		0		0	[1]
Investments, Fair Value Disclosure	4,296		4,296		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 Contract, Asset, Fair Value Disclosure	324		324
Foreign Currency Cash Flow Hedge Derivative at Fair Value, Net					(963)
Derivative Assets	324		324		(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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