Retirement Plans (Life Insurance) (Details) - USD ($)	12 Months Ended
	Jan. 31, 2020	Jan. 31, 2019
Retirement Benefits [Abstract]
Life Insurance, Corporate or Bank Owned, Amount	$ 2,250,000
Liability beginning of year	2,037,000	$ 2,088,000
Accretion expense	49,000	49,000
Present value of death benefits paid	(100,000)	(100,000)
Liability end of year	1,986,000	2,037,000
Cash surrender value	1,906,000	2,098,000
Life Insurance, Death Benefits Payable	$ 3,902,000	$ 4,256,000