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Goodwill and Intangible Assets, Net
 6 Months Ended
Apr. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets, Net Goodwill and Intangible Assets, Net
A summary of the change in the carrying amount of goodwill is as follows (in thousands):
Goodwill Carrying Amount
Balance at October 31, 2023$1,512 
Foreign currency translation adjustment(7)
Balance at April 30, 2024$1,505 
Goodwill is tested for impairment on an annual basis or when an event or changes in circumstances indicate that its carrying value may not be recoverable. There have been no impairment charges recorded against goodwill as of April 30, 2024.
Intangible assets consist of the following (in thousands):
April 30, 2024October 31, 2023
Gross Carrying AmountAccumulated AmortizationNet Carrying AmountWeighted Average Useful Life in YearsGross Carrying AmountAccumulated AmortizationNet Carrying AmountWeighted Average Useful Life in Years
Trade names and trademarks$2,108 (1,207)901 8$2,108 $(1,104)$1,004 8
Customer relationships4,037 (2,337)1,700 94,037 (2,111)1,926 9
Non-competition agreement 437 (159)278 8437 (132)305 8
Acquired water and mineral rights3,331 — 3,331 Indefinite3,422 — 3,422  Indefinite
$9,913 $(3,703)$6,210 $10,004 $(3,347)$6,657 
Amortization expense totaled $177,000 and $178,000 for the three months ended April 30, 2024 and 2023, respectively. Amortization expense totaled $356,000 and $375,000 for the six months ended April 30, 2024 and 2023, respectively.
7. Goodwill and Intangible Assets, Net (continued)
Estimated future amortization expense of intangible assets as of April 30, 2024 is as follows (in thousands):
2024 (remaining six months)$355 
2025711 
2026711 
2027427 
2028427 
Thereafter248 
 $2,879