v2.4.0.6
Stock Option Plan (Details) (Stock options, USD $)
In Thousands, except Share data, unless otherwise specified
 6 Months Ended 12 Months Ended
Dec. 31, 2012
Jun. 30, 2012
Stock options
    
Shares    
Outstanding at the beginning of the period (in shares) 2,949,940  
Granted (in shares) 222,009  
Exercised (in shares) (69,989)  
Forfeited or canceled (in shares) (322,790)  
Outstanding at the end of the period (in shares) 2,779,170 2,949,940
Weighted Average Exercise Price    
Outstanding at the beginning of the period (in dollars per share) $ 20.41  
Granted (in dollars per share) $ 21.30  
Exercised (in dollars per share) $ 8.64  
Forfeited or canceled (in dollars per share) $ 29.58  
Outstanding at the end of the period (in dollars per share) $ 20.59 $ 20.41
Additional information    
Weighted Average Remaining Contractual Life 4 years 7 days 4 years 2 months 16 days
Aggregate Intrinsic Value $ 8,254 $ 36,916
Stock options exercisable, Shares 1,912,034  
Stock options exercisable, Weighted Average Exercise Price (in dollars per share) $ 18.20  
Stock options exercisable, Weighted Average Remaining Contractual Life 3 years 6 months 4 days  
Stock options exercisable, Aggregate Intrinsic Value $ 6,943