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Retirement Plans (Life Insurance) (Details) - USD ($)	12 Months Ended
	Jan. 31, 2018	Jan. 31, 2017
Compensation and Retirement Disclosure [Abstract]
Liability for Future Policy Benefits, Life	$ 9,095,000	$ 9,189,000
Life Insurance, Corporate or Bank Owned, Amount	2,450,000
Liability beginning of year	2,184,000	2,166,000
Accretion expense	54,000	68,000
Present value of death benefits paid	(150,000)	(50,000)
Liability end of year	2,088,000	2,184,000
Cash surrender value	2,092,000	2,231,000
Death benefits received from life insurance policy	$ 4,486,000	$ 4,748,000

X

- Definition

Carrying amount as of the balance sheet date of amounts which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Section 45
-Paragraph 4
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6812-107765

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Period Type:	instant

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No definition available.

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X

- Definition

Amount of accrued obligation to policyholders that relates to insured events for long-duration contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 40
-Section 25
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=28366191&loc=d3e13145-158430

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-Publisher FASB
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X

- Definition

Amount of accrued obligation to policyholders that relates to insured events under long-term life insurance contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
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X

- Definition

Amount of cash outflow to policy and contract holders for long-duration insurance contracts related to benefit claims paid.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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X

- Definition

Amount of expense (income) recognized due to changes in the accrued obligation to policyholders that relates to insured events.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

This item represents the amount that could be realized under a life insurance contract or contracts owned by the Entity as of the date of the statement of financial position. Such Entity-owned life insurance policies are commonly known as corporate-owned life insurance (COLI) or bank-owned life insurance (BOLI).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X

- Definition

The cash inflow for proceeds from life insurance policies for which the entity is the beneficiary.

+ References

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