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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 | |
|---|---|---|
|
Oct. 31, 2013
|
Oct. 31, 2012
|
|
| Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ||
| Share Based Payment Arrangement | $ 103 | $ 142 |
|
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 | 2 | 2 |
|
Research and Development Expense [Member]
|
||
| Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ||
| Share Based Payment Arrangement | 1 | 1 |
|
Selling, General and Administrative Expenses [Member]
|
||
| Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ||
| Share Based Payment Arrangement | $ 100 | $ 139 |