Stock-Based Compensation and Stockholders' Rights (Restricted Stock Units) (Details) (USD $)	12 Months Ended
Jan. 31, 2015	Jan. 31, 2014	Jan. 31, 2013
Weighted- average fair value of restricted stock units
Aggregate fair value of stock awards vested during the period	$ 553,000	$ 523,000	$ 744,000
Restricted Stock or Stock Units [Member]
Summary of restricted stock and stock unit awards
Granted	518,626	99,430	669,375
Expense for 12 months ended	502,000	523,000	698,000
Unrecognized compensation at cost	1,499,000
Restricted Stock Units
Beginning balance	544,430	743,375	290,960
Granted	518,626	99,430	669,375
Vested	(232,430)	(260,375)	(204,960)
Forfeited	(18,000)	(38,000)	(12,000)
Ending balance	812,626	544,430	743,375
Weighted- average fair value of restricted stock units
Beginning balance	$ 1.87	$ 1.89	$ 3.80
Granted	$ 2.61	$ 2.07	$ 1.62
Vested	$ 2.38	$ 2.01	$ 3.63
Forfeited	$ 2.61	$ 2.00	$ 3.50
Ending balance	$ 1.87	$ 1.87	$ 1.89
2011 Plan [Member] \| Restricted Stock or Stock Units [Member]
Summary of restricted stock and stock unit awards
Granted	518,626
Restricted Stock Units
Granted	518,626
2011 Plan [Member] \| Restricted Stock Issued on Six Twenty Four Two Thousand Fourteen Vesting Over One Year [Member]
Summary of restricted stock and stock unit awards
Granted	28,626
Maximum term of stock options	1 year
Expense for 12 months ended	49,000	0	0
Unrecognized compensation at cost	25,000
Restricted Stock Units
Granted	28,626
2011 Plan [Member] \| Restricted Stock Issued On Two Thousand fourteen Vesting Over Five Year [Member]
Summary of restricted stock and stock unit awards
Granted	490,000
Maximum term of stock options	5 years
Expense for 12 months ended	171,000	0	0
Unrecognized compensation at cost	1,108,000
Restricted Stock Units
Granted	490,000
2011 Plan [Member] \| RestrictedStockIssuedOnTwoThousandThirteenTwelveThreeVestingOverFiveYears [Domain]
Summary of restricted stock and stock unit awards
Granted	18,000
Maximum term of stock options	5 years
Expense for 12 months ended	0	1,000	0
Unrecognized compensation at cost	0
Restricted Stock Units
Granted	18,000
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	0
Unrecognized compensation at cost	0
Restricted Stock Units
Granted	10,000
2011 Plan [Member] \| Restricted Stock Issued on Two Thousand Thirteen Six Twenty Five Vesting Over One Year [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	0
Unrecognized compensation at cost	0
Restricted Stock Units
Granted	71,430
2011 Plan [Member] \| Restricted Stock Units Issued On Two Thousand Twelve Six Nineteen Vesting Over One Year [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	17,000	33,000
Unrecognized compensation at cost	0
Restricted Stock Units
Granted	31,250
2011 Plan [Member] \| Restricted Stock Issued On Two Thousand Twelve Six Nineteen Vesting Over Five 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	157,000	160,000	111,000
Unrecognized compensation at cost	366,000
Restricted Stock Units
Granted	520,000
2007 Plan [Member] \| 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	41,000	82,000
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	80,000
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	67,000
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	226,000
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	99,000
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 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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