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Stock Incentive Plan and Employee Stock Purchase Plan - Outstanding and Exercisable Options (Details) - Stock options
shares in Thousands
12 Months Ended
Jun. 30, 2017
$ / shares
shares
Options Outstanding  
Number Outstanding | shares 2,463
Weighted-Average Remaining Contractual Life (Years) 5 years 5 months 1 day
Weighted-Average Exercise Price (in dollars per share) $ 6.05
Options Exercisable  
Number Outstanding | shares 1,703
Weighted-Average Exercise Price (in dollars per share) $ 6.49
$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 248
Weighted-Average Remaining Contractual Life (Years) 4 years 4 months 6 days
Weighted-Average Exercise Price (in dollars per share) $ 4.01
Options Exercisable  
Number Outstanding | shares 248
Weighted-Average Exercise Price (in dollars per share) $ 4.01
$4.23 - 4.94  
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) $ 4.94
Options Outstanding  
Number Outstanding | shares 61
Weighted-Average Remaining Contractual Life (Years) 1 year 9 months 29 days
Weighted-Average Exercise Price (in dollars per share) $ 4.66
Options Exercisable  
Number Outstanding | shares 61
Weighted-Average Exercise Price (in dollars per share) $ 4.66
$5.05 - 5.05  
Options Outstanding  
Number Outstanding | shares 760
Weighted-Average Remaining Contractual Life (Years) 9 years 5 months 1 day
Weighted-Average Exercise Price (in dollars per share) $ 5.05
$5.38 - 5.68  
Options Outstanding  
Number Outstanding | shares 266
Weighted-Average Remaining Contractual Life (Years) 2 years 6 months 15 days
Weighted-Average Exercise Price (in dollars per share) $ 5.65
Options Exercisable  
Number Outstanding | shares 266
Weighted-Average Exercise Price (in dollars per share) $ 5.65
$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 394
Weighted-Average Remaining Contractual Life (Years) 4 years 5 months 12 days
Weighted-Average Exercise Price (in dollars per share) $ 6.16
Options Exercisable  
Number Outstanding | shares 394
Weighted-Average Exercise Price (in dollars per share) $ 6.16
$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 247
Weighted-Average Remaining Contractual Life (Years) 2 years 11 months 19 days
Weighted-Average Exercise Price (in dollars per share) $ 6.50
Options Exercisable  
Number Outstanding | shares 247
Weighted-Average Exercise Price (in dollars per share) $ 6.50
$6.75 - 6.82  
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 14
Weighted-Average Remaining Contractual Life (Years) 4 years 2 months 19 days
Weighted-Average Exercise Price (in dollars per share) $ 6.77
Options Exercisable  
Number Outstanding | shares 14
Weighted-Average Exercise Price (in dollars per share) $ 6.77
$6.96 - 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
Exercise price, high end of range (in dollars per share) $ 6.96
Options Outstanding  
Number Outstanding | shares 276
Weighted-Average Remaining Contractual Life (Years) 5 years 3 months
Weighted-Average Exercise Price (in dollars per share) $ 6.96
Options Exercisable  
Number Outstanding | shares 276
Weighted-Average Exercise Price (in dollars per share) $ 6.96
$7.06 - 13.45  
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) $ 13.45
Options Outstanding  
Number Outstanding | shares 143
Weighted-Average Remaining Contractual Life (Years) 2 years 2 months 12 days
Weighted-Average Exercise Price (in dollars per share) $ 9.74
Options Exercisable  
Number Outstanding | shares 143
Weighted-Average Exercise Price (in dollars per share) $ 9.74
$15.22 - 15.22  
Options Outstanding  
Number Outstanding | shares 54
Weighted-Average Remaining Contractual Life (Years) 6 months
Weighted-Average Exercise Price (in dollars per share) $ 15.22
Options Exercisable  
Number Outstanding | shares 54
Weighted-Average Exercise Price (in dollars per share) $ 15.22