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Description of Business and Significant Accounting Policies - Stock Option Expense (Details Narrative) (USD $)
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1 Months Ended | 3 Months Ended | 3 Months Ended | 1 Months Ended | ||||||||||
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Jun. 30, 2008
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Jul. 31, 2014
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Jul. 31, 2013
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Apr. 30, 2014
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Jul. 31, 2014
Stock options
2001 Incentive and Non-statutory Stock Option Plan
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Jul. 31, 2014
Stock options
2011 Incentive and Non-statutory Stock Option Plan
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Jul. 31, 2014
Stock options
2011 Incentive and Non-statutory Stock Option Plan
Minimum
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Jul. 31, 2014
Stock options
2011 Incentive and Non-statutory Stock Option Plan
Maximum
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Jul. 31, 2014
Nonqualified Stock Options
Director
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Jul. 31, 2014
Nonqualified Stock Options
Minimum
Director
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Jul. 31, 2014
Nonqualified Stock Options
Maximum
Director
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Sep. 23, 2010
Nonqualified Stock Options 2010-09-23
David Sheerr
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Sep. 22, 2011
Nonqualified Stock Options 2011-09-22
David Sheerr
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Jul. 19, 2012
Nonqualified Stock Options 2012-07-19
David Sheerr
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||||||||||||
| Number of shares allowed for granting under the plan | 300,000 | 33,333 | ||||||||||||
| Number of options outstanding | 264,244 | 264,244 | ||||||||||||
| Vesting periods for options | 1 year | 5 years | 1 year | 2 years | 1 year | 1 year | 1 year | |||||||
| Number of shares granted | 8,333 | 0 | 25,000 | 16,667 | 16,667 | 16,667 | ||||||||
| Options expiration period | Ten years after date of grant. | Expire either five or ten years after date of grant. | Expire five years after date of grant. | Expire five years after date of grant. | Expire five years after date of grant. | |||||||||
| Compensation expense | $ 4,716 | $ 20,943 | ||||||||||||
| Unrecognized compensation expense | $ 9,000 | |||||||||||||
| Options granted, exercise price | $ 15.60 | |||||||||||||
| Percentage of options exercisable on date of grant | 100.00% | |||||||||||||