Investments in Marketable Securities - Investments at Amortized Cost and Fair Value (Details) - USD ($) $ in Thousands	Jan. 31, 2026	Jan. 31, 2025
Gain (Loss) on Securities [Line Items]
Amortized Cost	$ 96,007	$ 36,371
Unrealized Gains	0	0
Unrealized Losses	(9)	0
Fair Value	95,998	36,371
Commercial paper
Gain (Loss) on Securities [Line Items]
Amortized Cost	29,904
Unrealized Gains	0
Unrealized Losses	(9)
Fair Value	29,895
U.S. treasury securities
Gain (Loss) on Securities [Line Items]
Amortized Cost	29,876
Unrealized Gains	0
Unrealized Losses	0
Fair Value	29,876
Money market funds
Gain (Loss) on Securities [Line Items]
Amortized Cost	36,227	36,371
Unrealized Gains	0	0
Unrealized Losses	0	0
Fair Value	$ 36,227	$ 36,371