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Reconciles Net Income, Most Directly Comparable GAAP Financial Measure to Adjusted EBITDA (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Jun. 30, 2012
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]          
Net (loss) income $ (4,784) $ 9,045 $ (11,984) $ 11,698  
Interest expense, net 13 6 19 9  
Tax (benefit) provision (2,192) 4,828 (5,843) 6,142  
Depreciation 2,191 1,905 4,402 3,760  
Amortization of intangible assets 2,230 692 4,018 1,508  
Restructuring and other charges 217   5,201   2,821
Acquisition costs and other related expenses 42 593 272 618  
Fair value adjustments from purchase accounting 1,272 (44) 2,197 (22)  
Stock-based compensation expense 2,010 1,812 4,359 3,852  
Adjusted EBITDA $ 999 $ 18,837 $ 2,641 $ 27,565