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Share-Based Compensation - Summary of Stock Option Activity Under Stock Option Plans for Employees and Non-Executive Directors (Detail) (USD $)
Share data in Thousands, except Per Share data, unless otherwise specified
1 Months Ended 12 Months Ended
Aug. 06, 2009
Jun. 30, 2012
Employee Stock Option [Member]
Jun. 30, 2011
Employee Stock Option [Member]
Jun. 30, 2010
Employee Stock Option [Member]
Jun. 30, 2012
Non Executive [Member]
Jun. 30, 2011
Non Executive [Member]
Jun. 30, 2010
Non Executive [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Exercisable, Balance   $ 7.04          
Exercisable, Balance   923          
Expected to vest, Balance   $ 2.05          
Expected to vest, Balance   993          
Weighted Average Remaining Contractual Life (Years)              
Outstanding, Balance   6 years 11 months 5 days     4 years 5 months 9 days    
Exercisable, Balance   4 years 10 months 6 days          
Expected to vest, Balance   8 years 8 months 12 days          
Aggregate Intrinsic Value              
Outstanding, Balance   $ 112     $ 4    
Exercisable, Balance   37          
Expected to vest, Balance   $ 60          
Number Of Options              
Outstanding, Balance   1,972 1,891 1,824 250 246 235
Granted   579 592 768 35 45 45
Exercised   (2)   (4)      
Expired         (42) (41) (34)
Expired/forfeited   (259) (511) (697)      
Outstanding, Balance   2,290 1,972 1,891 243 250 246
Weighted Average Exercise Price              
Outstanding, Balance   $ 4.56 $ 6.20 $ 6.98 $ 4.36 $ 6.12 $ 7.00
Granted   $ 1.42 $ 1.74 $ 2.88 $ 1.72 $ 1.70 $ 2.50
Exercised $ 4.00 $ 1.20   $ 1.22      
Expired         $ 5.07 $ 11.96 $ 7.44
Expired/forfeited   $ 1.91 $ 7.36 $ 4.64      
Outstanding, Balance   $ 4.06 $ 4.56 $ 6.20 $ 3.86 $ 4.36 $ 6.12