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Fair Value Measurements (Details) (Fair Value, Measurements, Recurring [Member], USD $)
Sep. 30, 2013
Sep. 30, 2012
Estimated Fair Value [Member]
   
Financial assets that are measured at fair value on a recurring basis    
Marketable equity securities $ 2,339,000 $ 4,631,000
Forward contracts 1,813,000  
Contingent Consideration (11,297,000) (23,432,000)
Net financial assets (liabilities or temporary equity) (7,145,000) (18,801,000)
Level 1 [Member]
   
Financial assets that are measured at fair value on a recurring basis    
Marketable equity securities 2,339,000 4,631,000
Forward contracts 0  
Contingent Consideration 0 0
Net financial assets (liabilities or temporary equity) 2,339,000 4,631,000
Level 2 [Member]
   
Financial assets that are measured at fair value on a recurring basis    
Marketable equity securities 0 0
Forward contracts 1,813,000  
Contingent Consideration 0 0
Net financial assets (liabilities or temporary equity) 1,813,000 0
Level 3 [Member]
   
Financial assets that are measured at fair value on a recurring basis    
Marketable equity securities 0 0
Forward contracts 0  
Contingent Consideration (11,297,000) (23,432,000)
Net financial assets (liabilities or temporary equity) $ (11,297,000) $ (23,432,000)