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Nature of Business and Summary of Significant Accounting Policies (Allowances Against Accounts Receivable) (Details) - Allowance for Doubtful Accounts [Member] - USD ($)
$ in Thousands
12 Months Ended
Nov. 30, 2015
Nov. 30, 2014
Nov. 30, 2013
Allowance for Doubtful Accounts Receivable [Roll Forward]      
Beginning balance $ 1,646 $ 2,250 $ 2,278
Charge to costs and expenses 271 365 649
Write-offs and other (512) (949) (688)
Translation adjustments 16 (20) 11
Ending balance $ 1,421 $ 1,646 $ 2,250