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Acquisition - Allocation of purchase price after valuation adjustments (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2012
Dec. 20, 2012
Prince Agri Products Inc
OmniGen Research, LLC
Assets        
Property, plant and equipment       $ 1,202
Intangibles       23,781
Goodwill 12,613 12,613 1,717 10,896
Total assets       35,879
Liabilities        
Other current and long-term liabilities       13,129
Total liabilities       13,129
Net assets acquired       $ 22,750