Financial Instruments and Risk Management (Details 4) (Cash flow hedges, USD $)	3 Months Ended
	May 31, 2013	May 31, 2012
Pre-tax effect of derivative instruments
Gain/ (Loss) Recognized in OCI (effective portion)	$ 33,000	$ 866,000
Gain/ (Loss) Reclassified from Accumulated Other Comprehensive Loss into Income	(698,000)	(900,000)
Gain/ (Loss) Recognized as Income		35,000
Foreign currency
Pre-tax effect of derivative instruments
Gain/ (Loss) Recognized in OCI (effective portion)	36,000	910,000
Gain/ (Loss) Reclassified from Accumulated Other Comprehensive Loss into Income	216,000	26,000
Gain/ (Loss) Recognized as Income		35,000
Gains (Losses) recorded in AOCI to be reclassified into income over the next year	320,000
Interest rate swaps
Pre-tax effect of derivative instruments
Gain/ (Loss) Recognized in OCI (effective portion)	(3,000)	(44,000)
Gain/ (Loss) Reclassified from Accumulated Other Comprehensive Loss into Income	(914,000)	(926,000)
Gains (Losses) recorded in AOCI to be reclassified into income over the next year	$ (3,040,000)