Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Goodwill (Details Narrative)

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Summary of Significant Accounting Policies - Goodwill (Details Narrative) (USD $)
12 Months Ended 49 Months Ended
Apr. 30, 2013
Apr. 30, 2012
Apr. 30, 2011
Apr. 30, 2013
Acquisition of Certain MMB Assets
Contingent purchase price amount $ 68,000 $ 211,000    
Cumulative contingent purchase amount       1,519,000
Goodwill impairment triggering event Based on a combination of factors that occurred in the fourth quarter of fiscal 2013, including the operating results of the MMB business unit, management concluded that a goodwill impairment triggering event had occurred. Accordingly, the Company performed a testing of the carrying value of $1,519,000 of goodwill for MMB using a discounted cash flow model to estimate the fair value of the reporting unit. After this testing, management concluded that the carrying value of the MMB business unit exceeded the fair value of this reporting unit. The implied fair value of the goodwill of the MMB business unit was calculated by allocating the fair values of substantially all of its individual assets, liabilities and identified intangible assets as if MMB business unit had been acquired in a business combination.      
Goodwill impairment charge $ 438,000