Comprehensive Income (Accumulated Other Comprehensive Loss) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Nov. 30, 2013
Schedule of Accumulated Other Comprehensive Loss [Line Items]
Balance as of February 28, 2013	$ (59,808)
Other comprehensive income before reclassifications	(2,754)
Amounts reclassified from accumulated other comprehensive loss	5,435
Other Comprehensive Income	2,681
Balance as of November 30, 2013	(57,127)
Net Unrecognized Actuarial Losses [Member]
Schedule of Accumulated Other Comprehensive Loss [Line Items]
Balance as of February 28, 2013	(49,479)
Other comprehensive income before reclassifications	(287)
Amounts reclassified from accumulated other comprehensive loss	788
Other Comprehensive Income	501
Balance as of November 30, 2013	(48,978)
Net Unrecognized Hedge Losses [Member]
Schedule of Accumulated Other Comprehensive Loss [Line Items]
Balance as of February 28, 2013	(10,329)
Other comprehensive income before reclassifications	(2,467)
Amounts reclassified from accumulated other comprehensive loss	4,647
Other Comprehensive Income	2,180
Balance as of November 30, 2013	$ (8,149)