Contingent Liabilities (Progression Of Liabilities) (Details) (USD $)	3 Months Ended
	Feb. 29, 2012
Loss Contingencies [Line Items]
Beginning Balance	$ 8,620,000
Reserves Used	(1,589,000)
Changes in Estimates
Ending Balance	7,031,000
Product Returns [Member]
Loss Contingencies [Line Items]
Beginning Balance	4,737,000
Reserves Used	(754,000)
Changes in Estimates
Ending Balance	3,983,000
Recall-Related Costs [Member]
Loss Contingencies [Line Items]
Beginning Balance	3,883,000
Reserves Used	(835,000)
Changes in Estimates
Ending Balance	$ 3,048,000