Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements (Details)

v2.4.0.6
Fair Value Measurements (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2013
Mar. 31, 2012
Assets and liabilities measured at fair value on a recurring basis and their related valuation inputs    
Contingent consideration payable $ 2,333  
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 52,849 82,931
Recurring [Member] | Accrued expenses [Member]
    
Assets and liabilities measured at fair value on a recurring basis and their related valuation inputs    
Note payable guarantee   25
Recurring [Member] | Contingent consideration long-term [Member]
    
Assets and liabilities measured at fair value on a recurring basis and their related valuation inputs    
Contingent consideration payable 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 52,849 82,931
Recurring [Member] | Unobservable Inputs (Level 3) [Member] | Accrued expenses [Member]
    
Assets and liabilities measured at fair value on a recurring basis and their related valuation inputs    
Note payable guarantee   25
Recurring [Member] | Unobservable Inputs (Level 3) [Member] | Contingent consideration long-term [Member]
    
Assets and liabilities measured at fair value on a recurring basis and their related valuation inputs    
Contingent consideration payable $ 2,333