Commitments And Contingencies (Summary Of Contractual Commitments) (Details) (USD $)	Feb. 28, 2012
Commitments And Contingencies [Line Items]
Debt principal	$ 137,521,000	[1]
Debt interest	2,798,000
Operating leases	35,582,000
Total operating commitments	175,901,000
Gross lease obligations	709,000
Committed sublease income	(342,000)
Net restructuring-related commitment	367,000
Total commitments	176,268,000
Remainder Of 2012 [Member]
Commitments And Contingencies [Line Items]
Debt principal	101,810,000	[1]
Debt interest	1,515,000
Operating leases	8,166,000
Total operating commitments	111,491,000
Gross lease obligations	604,000
Committed sublease income	(275,000)
Net restructuring-related commitment	329,000
Total commitments	111,820,000
2013 [Member]
Commitments And Contingencies [Line Items]
Debt principal	35,711,000	[1]
Debt interest	1,283,000
Operating leases	9,483,000
Total operating commitments	46,477,000
Gross lease obligations	105,000
Committed sublease income	(67,000)
Net restructuring-related commitment	38,000
Total commitments	46,515,000
2014 [Member]
Commitments And Contingencies [Line Items]
Operating leases	6,592,000
Total operating commitments	6,592,000
Total commitments	6,592,000
2015 [Member]
Commitments And Contingencies [Line Items]
Operating leases	4,491,000
Total operating commitments	4,491,000
Total commitments	4,491,000
2016 [Member]
Commitments And Contingencies [Line Items]
Operating leases	3,256,000
Total operating commitments	3,256,000
Total commitments	3,256,000
Thereafter [Member]
Commitments And Contingencies [Line Items]
Operating leases	3,594,000
Total operating commitments	3,594,000
Total commitments	3,594,000
Revolving Line Of Credit [Member]
Commitments And Contingencies [Line Items]
Credit facility outstanding	$ 100,000,000

[1] For fiscal year 2012, the debt principal includes $100.0 million outstanding balance under the credit facility that is shown as long-term debt on the balance sheet due to the Company's ability to extend the outstanding balance on a long-term basis under the 2011 Credit Facility