Leases (ASC 842 Quantitative Information) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2026	Jan. 31, 2025
Leases [Abstract]
Operating lease cost	$ 9,388	$ 7,544
Short-term lease cost	476	536
Sublease income	(40)	(40)
Variable lease cost	1,480	1,570
Total lease cost	11,304	9,610
Cash paid for amounts included in the measurement of lease liabilities	5,394	6,522
Noncash investment in right-of-use assets in exchange for a lease liability	$ 542	$ 34,456
Weighted-average remaining lease term (years)	4 years 7 months 6 days	5 years 6 months
Weighted-average discount rate	9.84%	9.80%