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Segment Information - Summarized Information by Segment (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 6 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Segment Reporting Disclosure [Line Items]        
Total net revenue $ 71,751 $ 90,523 $ 150,377 $ 191,747
Total segment operating income before depreciation, amortization, and stock-based compensation expense 11,228 19,530 23,203 40,163
Depreciation and amortization (10,179) (7,517) (18,458) (14,625)
Stock-based compensation expense (3,029) (3,521) (5,799) (6,895)
Impairment of goodwill (92,350)   (92,350)   
Operating (loss) income (94,330) 8,492 (93,404) 18,643
DMS [Member]
        
Segment Reporting Disclosure [Line Items]        
Total net revenue 71,514 90,145 149,848 190,986
Total segment operating income before depreciation, amortization, and stock-based compensation expense 11,085 19,307 22,909 39,685
DSS [Member]
        
Segment Reporting Disclosure [Line Items]        
Total net revenue 237 378 529 761
Total segment operating income before depreciation, amortization, and stock-based compensation expense $ 143 $ 223 $ 294 $ 478