Retirement Plans (Life Insurance) (Details) - USD ($)	12 Months Ended
	Jan. 31, 2022	Jan. 31, 2021
Retirement Benefits [Abstract]
Death benefits due to participants	$ 1,800,000
Liability beginning of year	2,034,000	$ 1,986,000
Accretion expense	60,000	48,000
Present value of death benefits paid	(478,000)	0
Liability end of year	1,616,000	2,034,000
Cash surrender value	1,380,000	1,895,000
Life Insurance, Death Benefits Payable	$ 2,967,000	$ 3,917,000