Retirement Plans (Periodic Pension Cost) (Details) - Pension Plan - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2024	Jul. 31, 2023	Jul. 31, 2024	Jul. 31, 2023
Components of Net Cost
Service cost	$ 0	$ 0	$ 0	$ 0
Interest cost	311	360	622	720
Expected return on plan assets	(169)	(199)	(338)	(398)
Plan settlement	0	0	0	0
Amortization of prior service cost	(40)	0	(75)	0
Recognized net actuarial loss		0	0	0
Benefit cost	$ 102	$ 161	$ 209	$ 322