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Commitments and Contingencies - Additional Information (Details)
$ in Thousands
12 Months Ended
Jun. 10, 2016
complaint
Jun. 30, 2016
USD ($)
patent
Jun. 30, 2015
USD ($)
Jun. 30, 2014
USD ($)
Jun. 30, 2013
USD ($)
Guarantor Obligations [Line Items]          
Rental expense     $ 800 $ 800 $ 800
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]          
2017   $ 929      
2018   974      
2019   974      
2020   974      
2021   974      
Thereafter   $ 10,762      
Operating Lease [Member]          
Guarantor Obligations [Line Items]          
Lease expiration date   2013-10      
Base annual rate   $ 800      
Sullivan Agreement [Member]          
Guarantor Obligations [Line Items]          
Agreement date   Jul. 01, 2014      
Annual base salary   $ 600      
Agreement termination date   Jun. 30, 2017      
Goldenberg Agreement [Member] | Chief Scientific Officer and Chief Patent Officer [Member]          
Guarantor Obligations [Line Items]          
Agreement termination date   Jul. 01, 2015      
Salaries guaranteed   $ 600      
Guaranteed royalties   $ 150      
Class Action Shareholder Federal Securities Cases          
Guarantor Obligations [Line Items]          
Number of purported class action cases filed | complaint 2        
Patent litigation          
Guarantor Obligations [Line Items]          
Number of patents owned | patent   3