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Fair Value Measurement (Tables)
12 Months Ended
Sep. 30, 2013
Fair Value Measurement  
Schedule of changes in liabilities measured at fair value for which the Company has used Level 3 inputs to determine fair value

The changes in liabilities measured at fair value for which the Company has used Level 3 inputs to determine fair value for the year ended September 30, 2013 are as follows ($ in thousands):

 
  Level 3
Liabilities
 

Balance at September 30, 2011

  $ 10,151  

Acquisition contingent consideration

    8,185  

Settlements

    (3,162 )

Increase (decrease) of contingent consideration

    (663 )
       

Balance at September 30, 2012

    14,511  

Acquisition contingent consideration

    18,050  

Settlements

    (19,608 )

Increase (decrease) of contingent consideration

    5,437  
       

Balance at September 30, 2013

  $ 18,390