|
Segment reporting (Details) - Schedule of segment revenue by geographical (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Jul. 31, 2014
|
Jul. 31, 2013
|
Jul. 31, 2012
|
|
| Segment reporting (Details) - Schedule of segment revenue by geographical [Line Items] | |||
| Sales Revenue Net | $ 95,947 | $ 93,707 | $ 103,083 |
|
Life Sciences [Member] | UNITED STATES
|
|||
| Segment reporting (Details) - Schedule of segment revenue by geographical [Line Items] | |||
| Sales Revenue Net | 25,700 | 24,669 | 28,372 |
|
Life Sciences [Member] | Foreign Countries [Member]
|
|||
| Segment reporting (Details) - Schedule of segment revenue by geographical [Line Items] | |||
| Sales Revenue Net | 11,558 | 13,149 | 15,308 |
|
Life Sciences [Member]
|
|||
| Segment reporting (Details) - Schedule of segment revenue by geographical [Line Items] | |||
| Sales Revenue Net | 37,258 | 37,818 | 43,680 |
|
UNITED STATES
|
|||
| Segment reporting (Details) - Schedule of segment revenue by geographical [Line Items] | |||
| Sales Revenue Net | $ 84,389 | $ 80,559 | $ 87,776 |