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Restructuring Charges (Summary of Restructuring Activity) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
May 31, 2020
May 31, 2019
May 31, 2020
May 31, 2019
Restructuring Reserve [Roll Forward]        
Beginning Balance     $ 2,203  
Costs incurred $ 695 $ 2,777 1,735 $ 3,192
Cash disbursements     (2,480)  
Translation adjustments and other     (27)  
Ending Balance 1,431   1,431  
Excess Facilities and Other Costs        
Restructuring Reserve [Roll Forward]        
Beginning Balance     196  
Costs incurred     1,587  
Cash disbursements     (767)  
Translation adjustments and other     (27)  
Ending Balance 989   989  
Employee Severance and Related Benefits        
Restructuring Reserve [Roll Forward]        
Beginning Balance     2,007  
Costs incurred     148  
Cash disbursements     (1,713)  
Translation adjustments and other     0  
Ending Balance 442   442  
2019 Restructuring Activities        
Restructuring Reserve [Roll Forward]        
Beginning Balance     1,460  
Costs incurred 100   109  
Cash disbursements     (1,134)  
Ending Balance 435   435  
2019 Restructuring Activities | Excess Facilities and Other Costs        
Restructuring Reserve [Roll Forward]        
Beginning Balance     0  
Costs incurred     0  
Cash disbursements     0  
Ending Balance 0   0  
2019 Restructuring Activities | Employee Severance and Related Benefits        
Restructuring Reserve [Roll Forward]        
Beginning Balance     1,460  
Costs incurred     109  
Cash disbursements     (1,134)  
Ending Balance 435   435  
2017 Restructuring Activities        
Restructuring Reserve [Roll Forward]        
Beginning Balance     552  
Costs incurred 300   1,373  
Cash disbursements     (1,011)  
Translation adjustments and other     (20)  
2017 Restructuring Activities | Excess Facilities and Other Costs        
Restructuring Reserve [Roll Forward]        
Beginning Balance     5  
Costs incurred     1,334  
Cash disbursements     (432)  
Translation adjustments and other     (20)  
Ending Balance 887   887  
2017 Restructuring Activities | Employee Severance and Related Benefits        
Restructuring Reserve [Roll Forward]        
Beginning Balance     547  
Costs incurred     39  
Cash disbursements     (579)  
Translation adjustments and other     0  
Ending Balance $ 7   $ 7