Retirement Plans (Life Insurance) (Details) - USD ($)	12 Months Ended
	Jan. 31, 2016	Jan. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Liability for Future Policy Benefits, Life	$ 9,391,000	$ 9,486,000
Life Insurance, Corporate or Bank Owned, Amount	2,650,000
Liability beginning of year	2,388,000	2,401,000
Accretion expense	78,000	104,000
Present value of death benefits paid	(300,000)	(117,000)
Liability end of year	2,166,000	2,388,000
Cash surrender value	2,555,000	2,924,000
Company purchase of life insurance for participants	$ 4,951,000	$ 5,696,000