Retirement Plans (Periodic Pension Cost) (Details) - Pension Plan - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2025	Jul. 31, 2024	Jul. 31, 2025	Jul. 31, 2024
Components of Net Cost
Service cost	$ 0	$ 0	$ 0	$ 0
Interest cost	325	311	650	622
Expected return on plan assets	(208)	(169)	(416)	(338)
Plan settlement	0	0	0	0
Amortization of prior service cost	0	0	0	0
Recognized net actuarial gain	(90)	(40)	(180)	(75)
Benefit cost	$ 27	$ 102	$ 54	$ 209