Annual report pursuant to Section 13 and 15(d)

Goodwill and intangible assets (Details) - Schedule of goodwill

v2.4.0.8
Goodwill and intangible assets (Details) - Schedule of goodwill (USD $)
In Thousands, unless otherwise specified
1 Months Ended 12 Months Ended 12 Months Ended
May 31, 2013
Jul. 31, 2012
Jul. 31, 2013
Jul. 31, 2012
Enzo Life Sciences [Member]
Jul. 31, 2013
Enzo Clinical Labs [Member]
Jul. 31, 2012
Enzo Clinical Labs [Member]
Jul. 31, 2011
Enzo Clinical Labs [Member]
Goodwill [Line Items]              
Balance   $ 27,373 $ 7,452 $ 19,921 $ 7,452 $ 7,452 $ 7,452
Foreign currency translation   (1,083)   (1,083)      
Impairment charge 0 (18,838)   (18,838)      
Balance   $ 7,452 $ 7,452   $ 7,452 $ 7,452 $ 7,452