Annual report pursuant to Section 13 and 15(d)

Liabilities Required to be Presented on Balance Sheet at Fair Value (Detail)

v2.4.1.9
Liabilities Required to be Presented on Balance Sheet at Fair Value (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Apr. 28, 2014
Mar. 31, 2014
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Contingent liabilities $ 0us-gaap_BusinessCombinationContingentConsiderationLiability $ 60us-gaap_BusinessCombinationContingentConsiderationLiability $ 238us-gaap_BusinessCombinationContingentConsiderationLiability
Fair Value, Inputs, Level 1      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Contingent liabilities 0us-gaap_BusinessCombinationContingentConsiderationLiability
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
   
Fair Value, Inputs, Level 2      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Contingent liabilities 0us-gaap_BusinessCombinationContingentConsiderationLiability
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
   
Fair Value, Inputs, Level 3      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Contingent liabilities $ 0us-gaap_BusinessCombinationContingentConsiderationLiability
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
  $ 238us-gaap_BusinessCombinationContingentConsiderationLiability
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member