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Stock Incentive Plan and Employee Stock Purchase Plan - Outstanding and Exercisable Options (Details) - Stock options
12 Months Ended
Jun. 30, 2016
$ / shares
shares
Options Outstanding  
Number Outstanding | shares 2,377,176
Weighted-Average Remaining Contractual Life (Years) 3 years 11 months 19 days
Weighted-Average Exercise Price (in dollars per share) $ 8.00
Options Exercisable  
Number Outstanding | shares 2,303,766
Weighted-Average Exercise Price (in dollars per share) $ 8.06
$4.00 - 4.01  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise price, low end of range (in dollars per share) 4.00
Exercise price, high end of range (in dollars per share) $ 4.01
Options Outstanding  
Number Outstanding | shares 332,613
Weighted-Average Remaining Contractual Life (Years) 4 years 5 months 27 days
Weighted-Average Exercise Price (in dollars per share) $ 4.01
Options Exercisable  
Number Outstanding | shares 332,613
Weighted-Average Exercise Price (in dollars per share) $ 4.01
$4.23 - 5.68  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise price, low end of range (in dollars per share) 4.23
Exercise price, high end of range (in dollars per share) $ 5.68
Options Outstanding  
Number Outstanding | shares 356,621
Weighted-Average Remaining Contractual Life (Years) 4 years 1 month 17 days
Weighted-Average Exercise Price (in dollars per share) $ 5.37
Options Exercisable  
Number Outstanding | shares 341,581
Weighted-Average Exercise Price (in dollars per share) $ 5.40
$5.74 - 6.28  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise price, low end of range (in dollars per share) 5.74
Exercise price, high end of range (in dollars per share) $ 6.28
Options Outstanding  
Number Outstanding | shares 443,640
Weighted-Average Remaining Contractual Life (Years) 5 years 3 months 29 days
Weighted-Average Exercise Price (in dollars per share) $ 6.15
Options Exercisable  
Number Outstanding | shares 416,552
Weighted-Average Exercise Price (in dollars per share) $ 6.14
$6.32 - 6.63  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise price, low end of range (in dollars per share) 6.32
Exercise price, high end of range (in dollars per share) $ 6.63
Options Outstanding  
Number Outstanding | shares 343,271
Weighted-Average Remaining Contractual Life (Years) 3 years 6 months 7 days
Weighted-Average Exercise Price (in dollars per share) $ 6.51
Options Exercisable  
Number Outstanding | shares 339,041
Weighted-Average Exercise Price (in dollars per share) $ 6.51
$6.75 - 682  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise price, low end of range (in dollars per share) 6.75
Exercise price, high end of range (in dollars per share) $ 6.82
Options Outstanding  
Number Outstanding | shares 13,500
Weighted-Average Remaining Contractual Life (Years) 5 years 2 months 19 days
Weighted-Average Exercise Price (in dollars per share) $ 6.77
Options Exercisable  
Number Outstanding | shares 13,500
Weighted-Average Exercise Price (in dollars per share) $ 6.77
$6.96  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise price, low end of range (in dollars per share) $ 6.96
Options Outstanding  
Number Outstanding | shares 340,845
Weighted-Average Remaining Contractual Life (Years) 5 years 9 months 29 days
Weighted-Average Exercise Price (in dollars per share) $ 6.96
Options Exercisable  
Number Outstanding | shares 313,793
Weighted-Average Exercise Price (in dollars per share) $ 6.96
$7.06 - 20.47  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Exercise price, low end of range (in dollars per share) 7.06
Exercise price, high end of range (in dollars per share) $ 28.47
Options Outstanding  
Number Outstanding | shares 546,686
Weighted-Average Remaining Contractual Life (Years) 1 year 6 months 7 days
Weighted-Average Exercise Price (in dollars per share) $ 15.28
Options Exercisable  
Number Outstanding | shares 546,686
Weighted-Average Exercise Price (in dollars per share) $ 15.28