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Stockholders' Equity (Details) - Schedule of share-based compensation expense by line item (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
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Apr. 30, 2014
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Apr. 30, 2013
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Apr. 30, 2014
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Apr. 30, 2013
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| Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ||||
| Share Based Payment Arrangement | $ 283 | $ 140 | $ 497 | $ 441 |
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Cost of Clinical Laboratory Services [Member]
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| Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ||||
| Share Based Payment Arrangement | 3 | 2 | 7 | 7 |
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Research and Development Expense [Member]
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| Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ||||
| Share Based Payment Arrangement | 1 | 1 | 2 | |
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Selling, General and Administrative Expenses [Member]
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| Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ||||
| Share Based Payment Arrangement | $ 280 | $ 137 | $ 489 | $ 432 |