Summary of Significant Accounting Policies - Other Assets (Details) - USD ($)	Jun. 30, 2015	Jun. 30, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Long-term deferred service cost	$ 1,490,000
Investment in a privately held company	1,411,000	$ 750,000
Long-term prepaid royalty license	997,000	1,246,000
Restricted cash	$ 840,000	$ 450,000