Fair Value Measurements Fair Value Hierarchy (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Nov. 30, 2013	Nov. 30, 2012	Nov. 30, 2013	Nov. 30, 2012	Feb. 28, 2013		Feb. 29, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign Currency Contract, Asset, Fair Value Disclosure	$ (589)		$ (589)
Foreign Currency Cash Flow Hedge Derivative at Fair Value, Net					(10)
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value	0		0		(21)
Derivative Assets	(589)		(589)		(31)
Trading Securities, Fair Value Disclosure	4,249		4,249		3,657
Available-for-sale Securities, Fair Value Disclosure	3		3		3
Other investment at cost	9,908		9,908		9,910	[1]
Investments, Fair Value Disclosure	14,160		14,160		13,570		13,570
Gain (Loss) on Fair Value Hedge Ineffectiveness, Net	(84)	(101)	(114)	51
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign Currency Contract, Asset, Fair Value Disclosure	0		0
Foreign Currency Cash Flow Hedge Derivative at Fair Value, Net					0
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value	0		0		0
Derivative Assets	0		0		0
Trading Securities, Fair Value Disclosure	4,249		4,249		3,657
Available-for-sale Securities, Fair Value Disclosure	3		3		3
Other investment at cost	0		0		0	[1]
Investments, Fair Value Disclosure	4,252		4,252		3,660
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign Currency Contract, Asset, Fair Value Disclosure	(589)		(589)
Foreign Currency Cash Flow Hedge Derivative at Fair Value, Net					(10)
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value	0		0		(21)
Derivative Assets	(589)		(589)		(31)
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

[1] There were no events or changes in circumstances that occurred to indicate a significant adverse effect on the cost of these investments.