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Intangible Assets
 9 Months Ended
Oct. 31, 2025
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible Assets Intangible Assets
Intangible assets consisted of the following (in thousands):
As of January 31,As of October 31,
20252025
Intellectual property excluding patents
$2,437$2,438
Patents
950950
3,3873,388
Less accumulated amortization
(1,262)(1,688)
$2,125$1,700

Amortization expense related to intangible assets was $0.1 million and $0.1 million for the three months ended October 31, 2024 and 2025, respectively, and $0.4 million and $0.4 million for the nine months ended October 31, 2024 and 2025. The patents were acquired and are being amortized over a weighted-average remaining useful life of approximately 1.8 years. Intellectual property excluding patents is being amortized over a remaining useful life of 3.3 years.