Stock-Based Compensation and Stockholders' Rights (Restricted Stock Units) (Details) (USD $) | 3 Months Ended |
Apr. 30, 2015 | Apr. 30, 2014 |
Restricted Stock or Stock Units [Member] | | |
Summary of restricted stock and stock unit awards | | |
Expense for 3 months ended | $122,000 | $133,000 |
Unrecognized compensation at cost | 1,377,000 | |
2011 Plan [Member] | 28626 units of restricted stock issued on 6/24/2014 vesting over 1 year [Member] | | |
Summary of restricted stock and stock unit awards | | |
Granted | 28,626 | |
Maximum term of stock options | 1 year | |
Expense for 3 months ended | 19,000 | |
Unrecognized compensation at cost | 6,000 | |
Restricted Stock Units | | |
Granted | 28,626 | |
2011 Plan [Member] | 490,000 units of restricted stock issued on 6/24/2014 vesting over 5 Year [Member] | | |
Summary of restricted stock and stock unit awards | | |
Granted | 490,000 | |
Maximum term of stock options | 5 years | |
Expense for 3 months ended | 64,000 | |
Unrecognized compensation at cost | 1,044,000 | |
Restricted Stock Units | | |
Granted | 490,000 | |
2011 Plan [Member] | 10,000 units of restricted stock issued on 12/03/2014 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 3 months ended | | 9,000 |
Restricted Stock Units | | |
Granted | | 10,000 |
2011 Plan [Member] | 71,430 units of restricted stock issued on 6/25/2013 vesting over 1yr [Member] | | |
Summary of restricted stock and stock unit awards | | |
Granted | 71,430 | |
Maximum term of stock options | 1 year | |
Expense for 3 months ended | 0 | 37,000 |
Unrecognized compensation at cost | 0 | |
Restricted Stock Units | | |
Granted | 71,430 | |
2011 Plan [Member] | 520,000 Grants of Restricted Stock, 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 3 months ended | 39,000 | 40,000 |
Unrecognized compensation at cost | 327,000 | |
Restricted Stock Units | | |
Granted | 520,000 | |
2011 Plan [Member] | Restricted Stock or Stock Units [Member] | | |
Summary of restricted stock and stock unit awards | | |
Granted | 0 | |
Restricted Stock Units | | |
Granted | 0 | |
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 3 months ended | 0 | 47,000 |
Unrecognized compensation at cost | $0 | |
Restricted Stock Units | | |
Granted | 382,500 | |
2007 Plan [Member] | Restricted Stock or Stock Units [Member] | | |
Summary of restricted stock and stock unit awards | | |
Granted | 0 | |
Restricted Stock Units | | |
Granted | 0 | |