| 
           Stockholders' Equity (Narrative) (Details) (USD $) 
         | 
        1 Months Ended | 9 Months Ended | 1 Months Ended | 1 Months Ended | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 
           Jan. 31, 2014 
         | 
        
           Jul. 31, 2013 
         | 
        
           Jun. 30, 2013 
         | 
        
           Jan. 31, 2014 
         | 
        
           Jan. 31, 2013 
         | 
        
           Dec. 17, 2013 
         | 
        
           Jul. 24, 2013 
         | 
        
           Jun. 27, 2013 
         | 
        
           May 14, 2013 
         | 
        
           Jan. 16, 2013 
         | 
        
           Sep. 28, 2012 
         | 
        
           Mar. 13, 2012 
         | 
        
           Sep. 30, 2013
 
          Institutional Investor [Member] 
         | 
        
           Sep. 26, 2013
 
          Institutional Investor [Member] 
         | 
        
           Sep. 30, 2013
 
          Laidlaw and Co [Member] 
         | 
        
           Sep. 26, 2013
 
          Laidlaw and Co [Member] 
         | 
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| Stockholders' Equity [Abstract] | ||||||||||||||||||||
| Issuance of common shares for services, shares | 300,000 | 317,143 | ||||||||||||||||||
| Common stock issued, price per share | $ 0.35 | $ 0.35 | $ 0.35 | $ 0.35 | ||||||||||||||||
| Issuance of common shares for services | $ 105,000 | $ 111,000 | $ 216,000 | |||||||||||||||||
| Equity Incentive Plan, shares authorized | 11,300,000 | 9,300,000 | 8,000,000 | 5,600,000 | 2,500,000 | |||||||||||||||
| Warrants exercised | 804,049 | |||||||||||||||||||
| Warrants exercised, shares | 7,006,064 | |||||||||||||||||||
| Stock issued for price protection, shares | 3,270,678 | |||||||||||||||||||
| Exercise price of warrants | 0.19 | [1] | 0.19 | [1] | ||||||||||||||||
| Stock options modified to be plan options | 1,291,167 | |||||||||||||||||||
| Newly issued warrents due to price protection agreement | 5,178,947 | |||||||||||||||||||
| Debt Instrument [Line Items] | ||||||||||||||||||||
| Conversion of notes payable, shares | 6,736,842 | |||||||||||||||||||
| Term of debentures | 1 year 6 months | 5 years | ||||||||||||||||||
| Fees Paid | 117,846 | 207,500 | ||||||||||||||||||
| Issuance of common shares and warrants for services, Shares | 4,231,840 | 1,986,914 | 1,347,368 | |||||||||||||||||
| Debt conversion, price per share | $ 0.3325 | $ 0.3325 | ||||||||||||||||||
| Warrant value recorded as debt discount | 804,049 | 389,565 | ||||||||||||||||||
| Warrant value recorded as debt issue cost | $ 156,952 | $ 94,316 | ||||||||||||||||||
          
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