Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 14.F)
-URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 14
-Section F

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- References

No definition available.

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- Definition

Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation.

+ References

No definition available.

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Stock-Based Compensation and Stockholders' Rights (Restricted Stock Units) (Details) - Restricted Stock Units (RSUs) [Member] - USD ($)	3 Months Ended		6 Months Ended
	Jul. 31, 2016	Jul. 31, 2015	Jul. 31, 2016	Jul. 31, 2015
Summary of restricted stock and stock unit awards
Expense	$ 152,000	$ 123,000	$ 276,000	$ 245,000
Unrecognized compensation cost	1,195,000		$ 1,195,000
2011 Plan [Member]
Summary of restricted stock and stock unit awards
Units granted			87,284
2011 Plan [Member] \| June 21, 2016 [Member] \| 1 year [Member]
Summary of restricted stock and stock unit awards
Units granted			51,284
Terms of vesting			1 year
Expense	33,000	0	$ 33,000	0
Unrecognized compensation cost	166,000		$ 166,000
2011 Plan [Member] \| June 21, 2016 [Member] \| 3 years [Member]
Summary of restricted stock and stock unit awards
Units granted			36,000
Terms of vesting			3 years
Expense	8,000	0	$ 8,000	0
Unrecognized compensation cost	132,000		$ 132,000
2011 Plan [Member] \| June 22, 2015 [Member] \| 1 year [Member]
Summary of restricted stock and stock unit awards
Units granted			27,174
Terms of vesting			1 year
Expense	6,000	13,000	$ 25,000	13,000
Unrecognized compensation cost	0		$ 0
2011 Plan [Member] \| June 22, 2015 [Member] \| 4 years [Member]
Summary of restricted stock and stock unit awards
Units granted			48,000
Terms of vesting			4 years
Expense	8,000	5,000	$ 16,000	5,000
Unrecognized compensation cost	94,000		$ 94,000
2011 Plan [Member] \| June 24, 2014 [Member] \| 1 year [Member]
Summary of restricted stock and stock unit awards
Units granted			28,626
Terms of vesting			1 year
Expense	0	6,000	$ 0	25,000
Unrecognized compensation cost	0		$ 0
2011 Plan [Member] \| June 24, 2014 [Member] \| 5 years [Member]
Summary of restricted stock and stock unit awards
Units granted			490,000
Terms of vesting			5 years
Expense	60,000	61,000	$ 120,000	125,000
Unrecognized compensation cost	680,000		$ 680,000
2011 Plan [Member] \| June 19, 2012 [Member] \| 5 years [Member]
Summary of restricted stock and stock unit awards
Units granted			520,000
Terms of vesting			5 years
Expense	37,000	$ 38,000	$ 74,000	$ 77,000
Unrecognized compensation cost	$ 123,000		$ 123,000