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Comprehensive Loss (Details) (USD $)
 3 Months Ended 3 Months Ended
May 31, 2014
May 31, 2013
May 31, 2014
Unrealized Holding Gains (Losses) On Cash Flow Hedges
Interest Rate Swaps
Feb. 28, 2014
Unrealized Holding Gains (Losses) On Cash Flow Hedges
Interest Rate Swaps
May 31, 2014
Unrealized Holding Gains (Losses) On Cash Flow Hedges
Foreign currency contracts
Feb. 28, 2014
Unrealized Holding Gains (Losses) On Cash Flow Hedges
Foreign currency contracts
CHANGES IN ACCUMULATED OTHER COMPREHENSIVE LOSS BY COMPONENT            
Balance at the beginning of the period $ (1,091,000)   $ (797,000)   $ (294,000)  
Other comprehensive income before reclassification 90,000   12,000   78,000  
Amounts reclassified out of accumulated other comprehensive income 1,080,000   914,000   166,000  
Tax effects (369,000) (286,000) (325,000)   (44,000)  
Other comprehensive income 801,000 445,000 601,000   200,000  
Balance at the end of the period (290,000)   (196,000)   (94,000)  
Net deferred tax benefits     $ 110,000 $ 430,000 $ 30,000 $ 80,000