Restructuring Charges (Summary of Restructuring Activity) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 31, 2018	May 31, 2017	May 31, 2018	May 31, 2017
Restructuring Reserve [Roll Forward]
Beginning Balance			$ 4,126
Costs incurred	$ 426	$ 662	2,247	$ 17,801
Cash disbursements			(5,181)
Translation adjustments and other			57
Ending Balance	1,249		1,249
Excess Facilities and Other Costs
Restructuring Reserve [Roll Forward]
Beginning Balance			570
Costs incurred			997
Cash disbursements			(900)
Translation adjustments and other			46
Ending Balance	713		713
Employee Severance and Related Benefits
Restructuring Reserve [Roll Forward]
Beginning Balance			3,556
Costs incurred			1,250
Cash disbursements			(4,281)
Translation adjustments and other			11
Ending Balance	$ 536		$ 536