Leases and Commitments Leases and Commitments (ASC 842 Quantitative Information) (Details) - USD ($)	12 Months Ended
	Jan. 31, 2024	Jan. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
Operating lease cost	$ 5,099,000	$ 5,174,000
Short-term lease cost	421,000	388,000
Sublease income	(40,000)	(40,000)
Variable lease cost	983,000	883,000
Total lease cost	6,463,000	6,405,000
Cash paid for amounts included in the measurement of lease liabilities (in thousands)	5,793,000	5,716,000
Right-of-use assets obtained in exchange for new lease liabilities (in thousands)	$ 873,000	$ 545,000
Weighted-average remaining lease term (years)	1 year 6 months	2 years 2 months 12 days
Weighted-average discount rate	6.36%	6.30%