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Intangible Assets and Goodwill
 9 Months Ended
Aug. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible Assets and Goodwill Intangible Assets and Goodwill
Intangible Assets

Intangible assets are comprised of the following significant classes (in thousands):
 
August 31, 2022November 30, 2021
 Gross Carrying AmountAccumulated AmortizationNet Book ValueGross Carrying AmountAccumulated AmortizationNet Book Value
Purchased technology$212,700 $(145,389)$67,311 $212,700 $(128,797)$83,903 
Customer-related306,308 (152,864)153,444 306,308 (119,357)186,951 
Trademarks and trade names37,611 (24,930)12,681 37,611 (21,556)16,055 
Non-compete agreement2,000 (2,000)— 2,000 (1,724)276 
Total$558,619 $(325,183)$233,436 $558,619 $(271,434)$287,185 

In the three and nine months ended August 31, 2022, amortization expense related to intangible assets was $17.3 million and $51.9 million, respectively. In the three and nine months ended August 31, 2021, amortization expense related to intangible assets was $11.6 million and $33.6 million, respectively.

Future amortization expense for intangible assets as of August 31, 2022, is as follows (in thousands):
 
Remainder of 2022$17,177 
202368,895 
202456,079 
202545,569 
202635,968 
Thereafter9,748 
Total$233,436 
Goodwill

Changes in the carrying amount of goodwill in the nine months ended August 31, 2022 are as follows (in thousands):

Balance, November 30, 2021$671,152 
Measurement period adjustments1,752 
Translation adjustments(3)
Balance, August 31, 2022$672,901