Leases - ASC 842 Minimum Lease Payments (Details)	Jul. 23, 2024 USD ($) ft²	Jul. 31, 2026 USD ($)	Jan. 31, 2026 USD ($)	Jul. 31, 2025 USD ($)
Lessee, Lease, Description [Line Items]
Remainder of 2027		$ 4,846,000
2028		9,513,000
2029		9,656,000
2030		9,979,000
2031		6,863,000
Thereafter		0
Remaining balance of lease payments		40,857,000
Short-term lease liabilities		6,623,000	$ 6,490,000	$ 4,790,000
Long-term lease liabilities		26,672,000	30,006,000	33,096,000
Total lease liabilities		33,295,000
Difference between undiscounted cash flows and discounted cash flows		7,562,000
Lessee, Operating Lease, Tenant Improvement Allowance Received		134,000
Operating lease right-of-use assets		$ 27,396,000	$ 30,415,000	$ 33,019,000
Office, Manufacturing and Warehouse Facility
Lessee, Lease, Description [Line Items]
Area of lease | ft²	560,000
Lessee, operating lease, term of contract	65 months
Lessee, operating lease, rent abatement period	5 months
Lessee, operating lease, tenant improvement allowance	$ 1,700,000
October 1, 2025 Through April 30, 2026 | Office, Manufacturing and Warehouse Facility
Lessee, Lease, Description [Line Items]
Lessee, operating lease, base rent	$ 726,700
After April 30, 2026 | Office, Manufacturing and Warehouse Facility
Lessee, Lease, Description [Line Items]
Lessee, operating lease, base rent annual increase	3.50%