Financial Instruments and Risk Management (Details 4) (Cash flow hedges, USD $)	3 Months Ended		6 Months Ended
	Aug. 31, 2014	Aug. 31, 2013	Aug. 31, 2014	Aug. 31, 2013
Pre-tax effect of derivative instruments
Gain/ (Loss) Recognized in OCI (effective portion)	$ 152,000	$ (92,000)	$ 242,000	$ (59,000)
Gain/ (Loss) Reclassified from Accumulated Other Comprehensive Loss into Income	(335,000)	(817,000)	(1,415,000)	(1,515,000)
Foreign currency
Pre-tax effect of derivative instruments
Gain/ (Loss) Recognized in OCI (effective portion)	136,000	(68,000)	214,000	(32,000)
Gains recorded in accumulated other comprehensive loss to be reclassified into expense over the next six months			60,000
Losses recorded in accumulated other comprehensive loss to be reclassified into expense, period of time to transfer			6 months
Foreign currency | SG&A
Pre-tax effect of derivative instruments
Gain/ (Loss) Reclassified from Accumulated Other Comprehensive Loss into Income	(50,000)	108,000	(216,000)	324,000
Interest rate swaps
Pre-tax effect of derivative instruments
Gain/ (Loss) Recognized in OCI (effective portion)	16,000	(24,000)	28,000	(27,000)
Interest rate swaps | Interest expense
Pre-tax effect of derivative instruments
Gain/ (Loss) Reclassified from Accumulated Other Comprehensive Loss into Income	$ (285,000)	$ (925,000)	$ (1,199,000)	$ (1,839,000)