Stock Incentive Plan and Employee Stock Purchase Plan - Restricted Stock (Details)	1 Months Ended	12 Months Ended
	Oct. 31, 2012 item	Jun. 30, 2017 USD ($) $ / shares shares	Jun. 30, 2016 USD ($) $ / shares shares	Jun. 30, 2015 USD ($) $ / shares shares
Additional disclosures
Share-based compensation expense | $		$ 13,629,000	$ 12,638,000	$ 13,930,000
Restricted Stock Units, Performance Stock Units and Market Stock Units
Total Number of Shares Underlying
Unvested at the beginning of the year (in shares)		5,366,000	4,483,000	3,947,000
Granted (in shares)		2,340,000	3,148,000	2,212,000
Vested (in shares)		(1,710,000)	(1,571,000)	(1,175,000)
Cancelled/Forfeited (in shares)		(769,000)	(694,000)	(501,000)
Unvested at the end of the year (in shares)		5,227,000	5,366,000	4,483,000
Weighted Average Grant Date Fair Value Per Share
Unvested at the beginning of the year (in dollars per share) | $ / shares		$ 6.48	$ 6.86	$ 6.24
Granted (in dollars per share) | $ / shares		5.03	6.12	6.77
Vested (in dollars per share) | $ / shares		4.99	6.81	6.73
Cancelled/Forfeited (in dollars per share) | $ / shares		5.86	6.59	6.20
Unvested at the end of the year (in dollars per share) | $ / shares		$ 5.75	6.48	6.86
Additional disclosures
Unrecognized compensation cost | $		$ 26,300,000
Weighted average period for recognition of compensation costs		2 years 1 month 17 days
Weighted average grant date fair value (in dollars per share) | $ / shares		$ 5.03	$ 6.12	$ 6.77
Vested (in shares)		1,710,000	1,571,000	1,175,000
Restricted Stock Units
Total Number of Shares Underlying
Unvested at the beginning of the year (in shares)		4,204,000	3,325,000	3,116,000
Granted (in shares)		1,622,000	2,563,000	1,679,000
Vested (in shares)		(1,534,000)	(1,138,000)	(1,150,000)
Cancelled/Forfeited (in shares)		(408,000)	(546,000)	(320,000)
Unvested at the end of the year (in shares)		3,884,000	4,204,000	3,325,000
Weighted Average Grant Date Fair Value Per Share
Granted (in dollars per share) | $ / shares		$ 5.03	$ 6.01	$ 6.79
Additional disclosures
Share-based compensation expense | $		$ 9,500,000	$ 7,600,000	$ 7,900,000
Weighted average grant date fair value (in dollars per share) | $ / shares		$ 5.03	$ 6.01	$ 6.79
Aggregate fair market value of units vested | $		$ 7,600,000
Vested (in shares)		1,534,000	1,138,000	1,150,000
Performance Stock Units
Total Number of Shares Underlying
Unvested at the beginning of the year (in shares)			20,000	25,000
Granted (in shares)		10,000		20,000
Vested (in shares)			(20,000)	(25,000)
Unvested at the end of the year (in shares)		10,000		20,000
Additional disclosures
Share-based compensation expense | $		$ 0	$ 40,000	$ 200,000
Vested (in shares)			20,000	25,000
Cancelled (in shares)		0	0	0
Market Stock Units
Total Number of Shares Underlying
Unvested at the beginning of the year (in shares)		1,162,000	1,138,000	806,000
Granted (in shares)		708,000	585,000	513,000
Vested (in shares)		(176,000)	(413,000)
Cancelled/Forfeited (in shares)		(361,000)	(148,000)	(181,000)
Unvested at the end of the year (in shares)		1,333,000	1,162,000	1,138,000
Weighted Average Grant Date Fair Value Per Share
Granted (in dollars per share) | $ / shares		$ 5.20	$ 6.61	$ 6.64
Additional disclosures
Unrecognized compensation cost | $		$ 2,600,000
Share-based compensation expense | $		$ 2,500,000	$ 3,000,000	$ 3,400,000
Weighted average grant date fair value (in dollars per share) | $ / shares		$ 5.20	$ 6.61	$ 6.64
Vested (in shares)		176,000	413,000
Stock options
Additional disclosures
Weighted average period for recognition of compensation costs		3 years 5 months 1 day
Share-based compensation expense | $		$ 500,000	$ 800,000	$ 1,100,000
MSU Program | Market Stock Units
Total Number of Shares Underlying
Vested (in shares)			(0.40)	(0.50)
Additional disclosures
Share-based compensation expense | $		$ 700,000	$ 600,000	$ 500,000
Vested (in shares)			0.40	0.50
Number of measurement periods | item	2
MSU Program | Market Stock Units | Maximum
Additional disclosures
Target number of shares that participating executives may earn (as a percent)	150.00%