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Intangible Assets and Goodwill
 12 Months Ended
Nov. 30, 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):
 
November 30, 2022November 30, 2021
 Gross
Carrying
Amount		Accumulated
Amortization		Net Book
Value		Gross
Carrying
Amount		Accumulated
Amortization		Net Book
Value
Purchased technology$212,700 $(150,877)$61,823 $212,700 $(128,797)$83,903 
Customer-related306,308 (162,341)143,967 306,308 (119,357)186,951 
Trademarks and trade names37,611 (26,046)11,565 37,611 (21,556)16,055 
Non-compete agreement2,000 (2,000)— 2,000 (1,724)276 
Total$558,619 $(341,264)$217,355 $558,619 $(271,434)$287,185 

We amortize intangible assets assuming no expected residual value. Amortization expense related to these intangible assets was $68.9 million, $46.9 million, and $27.9 million in fiscal years 2022, 2021, and 2020, respectively.

Future amortization expense for intangible assets as of November 30, 2022 is as follows (in thousands):
 
2023$68,895 
202456,079 
202545,569 
202636,098 
202710,714 
Total$217,355 

Goodwill

Changes in the carrying amount of goodwill for fiscal years 2022 and 2021 are as follows (in thousands):
November 30, 2022November 30, 2021
Balance, beginning of year$671,152 $491,726 
Measurement Period Adjustments(1)
(88)(77)
Additions(2)
— 179,521 
Translation Adjustments(27)(18)
Balance, end of year$671,037 $671,152 
(1) Represents final measurement period adjustments related to our Kemp acquisition. Refer to Note 8: Business Combinations for further information.
(2) The additions to goodwill during fiscal year 2021 are related to the acquisition of Kemp in November 2021. Refer to Note 8: Business Combinations for further information.

We assess the impairment of goodwill on an annual basis and whenever events or changes in circumstances indicate that the carrying value of the asset may not be recoverable.

During fiscal year 2022, we performed a quantitative assessment as of October 31, 2022 and concluded that there was no impairment since it was not more likely than not that the fair value of our reporting unit was less than its carrying value. We did not recognize any goodwill impairment charges during fiscal years 2022, 2021, or 2020.