Stockholders' Equity (Details) - Schedule of share-based compensation expense by line item (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | |
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Oct. 31, 2014
|
Oct. 31, 2013
|
|
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] | ||
Share-based Payment Arrangement | $ 98 | $ 103 |
Cost of Clinical Laboratory Services [Member]
|
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Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] | ||
Share-based Payment Arrangement | 1 | 2 |
Research and Development Expense [Member]
|
||
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] | ||
Share-based Payment Arrangement | 1 | 1 |
Selling, General and Administrative Expenses [Member]
|
||
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] | ||
Share-based Payment Arrangement | $ 96 | $ 100 |