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Summary of Significant Accounting Policies - Intangible Assets (Details Narrative) (USD $)
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12 Months Ended | 3 Months Ended | 12 Months Ended | ||||
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Apr. 30, 2013
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Apr. 30, 2012
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Apr. 30, 2011
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Jan. 31, 2012
XcelaSAN
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Apr. 30, 2013
Maximum
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Apr. 30, 2013
Minimum
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Apr. 30, 2013
Customer Relationships
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| Intangible Assets and Goodwill (Textual) [Abstract] | |||||||
| Intangible assets, Amortization method | Straight-line basis | Amortized over a two-year period at a rate of 65% of the gross value acquired in the first year subsequent to their acquisition and 35% of the gross value acquired in the second year. | |||||
| Intangible Asset, Estimated period of benefit | 5 years | 4 years | |||||
| Impairments of intangible assets | $ 2,387,000 | $ 0 | $ 2,387,000 | ||||
| Residual value of intangible assets | 0 | ||||||
| Revenues | 27,616,000 | 36,079,000 | 46,847,000 | 8,000 | |||
| Intangible assets amortization expense | $ 164,000 | $ 164,000 | $ 407,000 | ||||
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- Details
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- Definition
The aggregate expected value at the end of their useful life of a major finite-lived intangible asset class acquired during the period either individually or as part of a group of assets (in either an asset acquisition or business combination). A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amortization method of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar either by their nature or by their use in the operations of a company. The straight-line method is the preferred amortization method, unless another method better reflects the pattern in which the asset is consumed. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. No definition available.
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- Definition
The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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