Commitments and Contingencies (Details) (USD $)	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
Operating Lease Agreements and Long-term Debt
Rent expense	$ 6,500,000	$ 8,700,000	$ 7,100,000
Future minimum lease payments under non-cancelable operating lease agreements
2015	6,427,000
2016	8,205,000
2017	8,295,000
2018	7,931,000
2019	4,818,000
Thereafter	17,969,000
Total	53,645,000
Long-term principal and interest on Convertible Note
Liability recorded associated with indemnification agreements	0
License agreement | WARF (Wisconsin Alumni Research Foundation)
License and Royalty Agreements
Royalty costs	700,000	600,000	1,000,000
Royalty amount accrued	100,000	100,000
License agreement | WARF (Wisconsin Alumni Research Foundation) | Minimum
License and Royalty Agreements
Annual commitment amount	300,000
3.75% Convertible Note and 3.50% Convertible Note
Long-term principal and interest on Convertible Note
2015	7,775,000
2016	7,775,000
2017	104,338,000
2018	117,348,000
Total	$ 237,236,000