Accumulated Other Comprehensive Loss (Accumulated Other Comprehensive Loss) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
May 31, 2014
Schedule of Accumulated Other Comprehensive Loss [Line Items]  
Balance $ (46,271)
Other comprehensive income before reclassifications (1,091)
Amounts reclassified from accumulated other comprehensive loss 1,586
Other comprehensive income (loss) 495
Balance (45,776)
Net Unrecognized Actuarial Losses [Member]
 
Schedule of Accumulated Other Comprehensive Loss [Line Items]  
Balance (38,715)
Other comprehensive income before reclassifications 0
Amounts reclassified from accumulated other comprehensive loss 213
Other comprehensive income (loss) 213
Balance (38,502)
Net Unrecognized Hedge Losses [Member]
 
Schedule of Accumulated Other Comprehensive Loss [Line Items]  
Balance (7,556)
Other comprehensive income before reclassifications (1,091)
Amounts reclassified from accumulated other comprehensive loss 1,373
Other comprehensive income (loss) 282
Balance $ (7,274)