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Fair Value Measurements (Tables)
3 Months Ended
Jun. 30, 2013
Assets and Liabilities that are Required to be Presented on Balance Sheet at Fair Value, Recurring

Contingent liabilities

(in thousands)

   Total      Level 1      Level 2      Level 3  

June 30, 2013

   $ 841       $ —         $ —         $ 841   

March 31, 2013

   $ 841       $ —         $ —         $ 841