Nature of Business and Summary of Significant Accounting Policies (Summary of Allowances) (Details) - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2021	Nov. 30, 2020	Nov. 30, 2019
SEC Schedule, 12-09, Allowance, Credit Loss
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 886	$ 667	$ 574
Charge to costs and expenses	58	429	606
Write-offs and other	(408)	(169)	(457)
Translation adjustments	16	(41)	(56)
Ending balance	552	886	667
Allowance for Sales Credit Memos
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	429	158	266
Charge to costs and expenses	(340)	265	(60)
Write-offs and other	0	0	(46)
Translation adjustments	(7)	6	(2)
Ending balance	$ 82	$ 429	$ 158