Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Details)

v2.4.0.8
Fair Value Measurements (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2013
Mar. 31, 2013
Assets and liabilities measured at fair value on a recurring basis and their related valuation inputs    
Contingent consideration $ 1,323  
Recurring [Member] | Cash and cash equivalents [Member]
    
Assets and liabilities measured at fair value on a recurring basis and their related valuation inputs    
Money market funds 61,734 52,849
Recurring [Member] | Accrued Liabilities [Member]
    
Assets and liabilities measured at fair value on a recurring basis and their related valuation inputs    
Contingent consideration 1,323  
Recurring [Member] | Contingent consideration non-current [Member]
    
Assets and liabilities measured at fair value on a recurring basis and their related valuation inputs    
Business Acquisition, Contingent Consideration, at Fair Value, Noncurrent 1,212 2,333
Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Cash and cash equivalents [Member]
    
Assets and liabilities measured at fair value on a recurring basis and their related valuation inputs    
Money market funds 61,734 52,849
Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Accrued Liabilities [Member]
    
Assets and liabilities measured at fair value on a recurring basis and their related valuation inputs    
Contingent consideration 0  
Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Contingent consideration non-current [Member]
    
Assets and liabilities measured at fair value on a recurring basis and their related valuation inputs    
Business Acquisition, Contingent Consideration, at Fair Value, Noncurrent 0 0
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Cash and cash equivalents [Member]
    
Assets and liabilities measured at fair value on a recurring basis and their related valuation inputs    
Money market funds 0 0
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Accrued Liabilities [Member]
    
Assets and liabilities measured at fair value on a recurring basis and their related valuation inputs    
Contingent consideration 0  
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Contingent consideration non-current [Member]
    
Assets and liabilities measured at fair value on a recurring basis and their related valuation inputs    
Business Acquisition, Contingent Consideration, at Fair Value, Noncurrent 0 0
Recurring [Member] | Unobservable Inputs (Level 3) [Member] | Cash and cash equivalents [Member]
    
Assets and liabilities measured at fair value on a recurring basis and their related valuation inputs    
Money market funds 0 0
Recurring [Member] | Unobservable Inputs (Level 3) [Member] | Accrued Liabilities [Member]
    
Assets and liabilities measured at fair value on a recurring basis and their related valuation inputs    
Contingent consideration 1,323  
Recurring [Member] | Unobservable Inputs (Level 3) [Member] | Contingent consideration non-current [Member]
    
Assets and liabilities measured at fair value on a recurring basis and their related valuation inputs    
Business Acquisition, Contingent Consideration, at Fair Value, Noncurrent $ 1,212 $ 2,333