Retirement Plans (Periodic Pension Cost) (Details) - Pension Plan - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2026	Jul. 31, 2025	Jul. 31, 2026	Jul. 31, 2025
Components of Net Cost
Service cost	$ 0	$ 0	$ 0	$ 0
Interest cost	272	325	544	650
Expected return on plan assets	(243)	(208)	(472)	(416)
Plan settlement	0	0	0	0
Amortization of prior service cost	44	0	88	0
Recognized net actuarial gain	(276)	(90)	(552)	(180)
Pension (benefit) expense	$ (203)	$ 27	$ (392)	$ 54