Other Comprehensive Income (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
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total accumulated other comprehensive loss	$ (2,872)		$ (2,872)		$ (6,497)
Other Comprehensive Income (Loss), Net of Tax	3,885	1,376	3,625	(3,710)
Other Comprehensive Income (Loss) Before Reclassifications			3,780
Reclassified From Other Comprehensive Income (Loss)			(155)
Foreign Currency Gain (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total accumulated other comprehensive loss	(1,244)		(1,244)		(5,340)
Other Comprehensive Income (Loss), Net of Tax			4,096
Other Comprehensive Income (Loss) Before Reclassifications			4,096
Reclassified From Other Comprehensive Income (Loss)			0
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total accumulated other comprehensive loss	(59)		(59)		(59)
Other Comprehensive Income (Loss), Net of Tax			0
Other Comprehensive Income (Loss) Before Reclassifications			0
Reclassified From Other Comprehensive Income (Loss)			0
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total accumulated other comprehensive loss	(1,072)		(1,072)		(1,031)
Other Comprehensive Income (Loss), Net of Tax			(41)
Other Comprehensive Income (Loss) Before Reclassifications			(41)
Reclassified From Other Comprehensive Income (Loss)			0
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total accumulated other comprehensive loss	(497)		(497)		(67)
Other Comprehensive Income (Loss), Net of Tax			(430)
Other Comprehensive Income (Loss) Before Reclassifications			(275)
Reclassified From Other Comprehensive Income (Loss)			$ (155)