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Goodwill and Acquired Intangible Assets
3 Months Ended
Apr. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Acquired Intangible Assets Goodwill and Acquired Intangible Assets
There have been no changes in the carrying amount of goodwill since January 31, 2021.
Acquired intangible assets subject to amortization as of April 30, 2021 were as follows:
CostAccumulated AmortizationNetWeighted Average
Remaining Useful Life
(in thousands)(in years)
Customer relationships$21,800 $(1,272)$20,528 9.4
Developed technology5,600 (653)4,947 4.4
Trademarks400 (117)283 1.4
Total acquired intangibles, net$27,800 $(2,042)$25,758 
For the three months ended April 30, 2021, amortization expense related to acquired intangible assets was $0.9 million. No amortization expense was recorded during the three months ended April 30, 2020.