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Contingent Liabilities Re-measured (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Apr. 28, 2014
Mar. 31, 2014
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Contingent liabilities    $ 60 $ 238
Fair Value, Inputs, Level 1
      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Contingent liabilities 0   0
Fair Value, Inputs, Level 2
      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Contingent liabilities 0   0
Fair Value, Inputs, Level 3
      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Contingent liabilities      $ 238