Intangible Assets (Tables)

12 Months Ended

Jan. 31, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Finite-lived Intangible Assets

Intangible assets consisted of the following (in thousands):

	As of January 31,
	2022		2023
Intellectual property excluding patents	$	2,458	$	2,458
Patents	950		950
	3,408		3,408
Less accumulated amortization	(533)		(614)
	$	2,875	$	2,794

Schedule of Indefinite-Lived Intangible Assets

Intangible assets consisted of the following (in thousands):

	As of January 31,
	2022		2023
Intellectual property excluding patents	$	2,458	$	2,458
Patents	950		950
	3,408		3,408
Less accumulated amortization	(533)		(614)
	$	2,875	$	2,794

Schedule of Future Amortization Expense

As of January 31, 2023, future amortization expense for definite-lived intangible assets is estimated to be as follows (in thousands):

Year Ending January 31,
2024	$	80
2025	80
2026	80
2027	75
2028	11
Thereafter	10
	$	336