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Nature of Business and Summary of Significant Accounting Policies (Narrative) (Details) - USD ($)
 12 Months Ended
Nov. 30, 2021
Jul. 09, 2019
Nov. 30, 2022
Nov. 30, 2021
Nov. 30, 2020
Summary Of Significant Accounting Policies [Line Items]          
Impairment of goodwill     $ 0 $ 0 $ 0
Impairment of intangible assets     0 0 0
Other comprehensive (loss) income, tax provision (benefit)     1,100,000 (700,000) (1,600,000)
Advertising costs     1,100,000 900,000 500,000
Cyber incident     602,000 0 0
Acquisition-related expenses     4,603,000 4,102,000 3,637,000
Restructuring related costs     900,000 6,300,000 $ 5,900,000
Decrease in additional paid in capital $ (354,235,000)   (331,650,000) (354,235,000)  
Retained earnings 90,256,000   101,656,000 90,256,000  
Decrease in deferred tax liabilities (14,163,000)   (4,628,000) (14,163,000)  
Increase (decrease) in interest expense     $ (5,712,000) (10,475,000)  
Interest rate swap          
Summary Of Significant Accounting Policies [Line Items]          
Percentage of variable rate debt, managed variability   50.00%      
Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2020-06          
Summary Of Significant Accounting Policies [Line Items]          
Decrease in additional paid in capital 47,500,000     47,500,000  
Unamortized discount 56,000,000     56,000,000  
Retained earnings 4,900,000     4,900,000  
Decrease in deferred tax liabilities 13,400,000     $ 13,400,000  
Increase (decrease) in interest expense $ 11,500,000        
Software licenses          
Summary Of Significant Accounting Policies [Line Items]          
Period of payments of licenses upon execution of contract     30 days    
Minimum | Stock Options          
Summary Of Significant Accounting Policies [Line Items]          
Stock-based compensation service period     4 years    
Minimum | Restricted Stock Units (RSUs)          
Summary Of Significant Accounting Policies [Line Items]          
Stock-based compensation service period     3 years    
Minimum | Software licenses          
Summary Of Significant Accounting Policies [Line Items]          
Expected timing of satisfaction, period     1 year    
Minimum | Maintenance          
Summary Of Significant Accounting Policies [Line Items]          
Expected timing of satisfaction, period     1 year    
Minimum | Services          
Summary Of Significant Accounting Policies [Line Items]          
Expected timing of satisfaction, period     1 year    
Minimum | Computer equipment and software          
Summary Of Significant Accounting Policies [Line Items]          
Useful lives of major asset     3 years    
Minimum | Furniture and fixtures          
Summary Of Significant Accounting Policies [Line Items]          
Useful lives of major asset     5 years    
Maximum | Stock Options          
Summary Of Significant Accounting Policies [Line Items]          
Stock-based compensation service period     5 years    
Maximum | Restricted Stock Units (RSUs)          
Summary Of Significant Accounting Policies [Line Items]          
Stock-based compensation service period     4 years    
Maximum | Software licenses          
Summary Of Significant Accounting Policies [Line Items]          
Expected timing of satisfaction, period     3 years    
Maximum | Maintenance          
Summary Of Significant Accounting Policies [Line Items]          
Expected timing of satisfaction, period     3 years    
Maximum | Services          
Summary Of Significant Accounting Policies [Line Items]          
Expected timing of satisfaction, period     3 years    
Maximum | Computer equipment and software          
Summary Of Significant Accounting Policies [Line Items]          
Useful lives of major asset     7 years    
Maximum | Furniture and fixtures          
Summary Of Significant Accounting Policies [Line Items]          
Useful lives of major asset     7 years