Stock-Based Compensation and Stockholders' Rights (Restricted Stock Units) (Details) - USD ($)	12 Months Ended
Jan. 31, 2016	Jan. 31, 2015	Jan. 31, 2014
Weighted- average fair value of restricted stock units
Aggregate fair value of stock awards vested during the period	$ 593,000	$ 553,000	$ 523,000
Restricted Stock or Stock Units [Member]
Summary of restricted stock and stock unit awards
Granted	75,174	518,626	99,430
Expense for 12 months ended	$ 493,000	$ 502,000	$ 523,000
Unrecognized compensation at cost	$ 1,132,000
Restricted Stock Units
Beginning balance	812,626	544,430	743,375
Granted	75,174	518,626	99,430
Vested	(212,626)	(232,430)	(260,375)
Forfeited	(18,000)	(18,000)	(38,000)
Ending balance	657,174	812,626	544,430
Weighted- average fair value of restricted stock units
Beginning balance	$ 2.24	$ 1.87	$ 1.89
Granted	2.76	2.61	2.07
Vested	2.79	2.38	2.01
Forfeited	2.74	2.61	2.00
Ending balance	$ 2.34	$ 2.24	$ 1.87
2011 Plan [Member] \| 48,000 Restricted Stock Units, issued 6/22/2015, vesting over 4 years [Member]
Summary of restricted stock and stock unit awards
Granted	48,000
Maximum term of stock options	4 years
Expense for 12 months ended	$ 22,000	$ 0	$ 0
Unrecognized compensation at cost	$ 110,000
Restricted Stock Units
Granted	48,000
2011 Plan [Member] \| 27,174 Restricted Stock Units, issued 6/22/2015, vesting over 1 years [Member]
Summary of restricted stock and stock unit awards
Granted	27,174
Maximum term of stock options	1 year
Expense for 12 months ended	$ 50,000	0	0
Unrecognized compensation at cost	$ 25,000
Restricted Stock Units
Granted	27,174
2011 Plan [Member] \| 28,626 Restricted Stock Units, issued 6/24/2014, vesting over 1 years [Member]
Summary of restricted stock and stock unit awards
Granted	28,626
Maximum term of stock options	1 year
Expense for 12 months ended	$ 25,000	49,000	0
Unrecognized compensation at cost	$ 0
Restricted Stock Units
Granted	28,626
2011 Plan [Member] \| 490,000 Restricted Stock Units, issued 6/24/2014, vesting over 5 years [Member]
Summary of restricted stock and stock unit awards
Granted	490,000
Maximum term of stock options	5 years
Expense for 12 months ended	$ 246,000	171,000	0
Unrecognized compensation at cost	$ 801,000
Restricted Stock Units
Granted	490,000
2011 Plan [Member] \| 10,000 units of restricted stock issued on 12/3/2013 vesting over 1 year [Member]
Summary of restricted stock and stock unit awards
Granted	10,000
Maximum term of stock options	1 year
Expense for 12 months ended		13,000	6,000
Unrecognized compensation at cost	$ 0
Restricted Stock Units
Granted	10,000
2011 Plan [Member] \| 18,000 Restricted Stock Units, issued 12/3/2013, vesting over 5 years [Member]
Summary of restricted stock and stock unit awards
Granted	18,000
Maximum term of stock options	5 years
Expense for 12 months ended	$ 0	0	1,000
Unrecognized compensation at cost	$ 0
Restricted Stock Units
Granted	18,000
2011 Plan [Member] \| 71,430 Restricted Stock Units, issued 6/25/2013, vesting over 1 years [Member]
Summary of restricted stock and stock unit awards
Granted	71,430
Maximum term of stock options	1 year
Expense for 12 months ended		50,000	100,000
Unrecognized compensation at cost	$ 0
Restricted Stock Units
Granted	71,430
2011 Plan [Member] \| 31,250 Restricted Stock Units, issued 6/19/2012, vesting over 1 years [Member]
Summary of restricted stock and stock unit awards
Granted	31,250
Maximum term of stock options	1 year
Expense for 12 months ended	$ 0	0	17,000
Unrecognized compensation at cost	$ 0
Restricted Stock Units
Granted	31,250
2011 Plan [Member] \| 520,000 Restricted Stock Units, issued 6/19/2012, vesting over 5 years [Member]
Summary of restricted stock and stock unit awards
Granted	520,000
Maximum term of stock options	5 years
Expense for 12 months ended	$ 150,000	157,000	160,000
Unrecognized compensation at cost	$ 196,000
Restricted Stock Units
Granted	520,000
2011 Plan [Member] \| Restricted Stock or Stock Units [Member]
Summary of restricted stock and stock unit awards
Granted	75,174
Restricted Stock Units
Granted	75,174
2007 Plan [Member] \| 78,125 Grants of Restricted Stock, issued 6/19/2012, vesting over 1 year [Member]
Summary of restricted stock and stock unit awards
Granted	78,125
Maximum term of stock options	1 year
Expense for 12 months ended	$ 0	0	41,000
Unrecognized compensation at cost	$ 0
Restricted Stock Units
Granted	78,125
2007 Plan [Member] \| 40,000 Grants of Restricted Stock, issued 3/21/2012, vesting immediately [Member]
Summary of restricted stock and stock unit awards
Granted	40,000
Expense for 12 months ended	$ 0	0	0
Unrecognized compensation at cost	$ 0
Restricted Stock Units
Granted	40,000
2007 Plan [Member] \| 68,960 Grants of Restricted Stock, issued 6/21/2011, vesting over 1 year [Member]
Summary of restricted stock and stock unit awards
Granted	68,960
Maximum term of stock options	1 year
Expense for 12 months ended	$ 0	0	0
Unrecognized compensation at cost	$ 0
Restricted Stock Units
Granted	68,960
2007 Plan [Member] \| 382,500 Restricted Stock Units, issued 6/16/2009, vesting over 5 years [Member]
Summary of restricted stock and stock unit awards
Granted	382,500
Maximum term of stock options	5 years
Expense for 12 months ended		62,000	198,000
Unrecognized compensation at cost	$ 0
Restricted Stock Units
Granted	382,500
2007 Plan [Member] \| 262,500 Restricted Stock Units, issued 6/19/2007, vesting over 5 years [Member]
Summary of restricted stock and stock unit awards
Granted	262,500
Maximum term of stock options	5 years
Expense for 12 months ended	$ 0	$ 0	$ 0
Unrecognized compensation at cost	$ 0
Restricted Stock Units
Granted	262,500

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.

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

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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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).

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The weighted average fair value at grant date for nonvested equity-based awards issued 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).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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