Note 2 - Summary of Significant Accounting Policies (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015	Jun. 30, 2015
Minimum [Member]
Media Content Service Period			30 days
Finite-Lived Intangible Asset, Useful Life			7 years
Standard Warranty Term			1 year
Maximum [Member] | Leasehold Improvements [Member]
Property, Plant and Equipment, Useful Life			15 years
Maximum [Member] | Product Warranty Exceptions [Member]
Standard Warranty Term			10 years
Maximum [Member]
Media Content Service Period			1 year
Finite-Lived Intangible Asset, Useful Life			20 years
Standard Warranty Term			5 years
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Asset	$ 0		$ 0
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Liability	0		0
Cash, FDIC Insured Amount	250,000		250,000
Cash, Uninsured Amount	37,093,000		37,093,000		$ 28,494,000
Depreciation	1,603,000	$ 1,465,000	4,524,000	$ 4,328,000
Research and Development Expense	$ 1,562,000	$ 1,096,000	$ 4,193,000	$ 4,397,000
Incremental Common Shares Attributable to Dilutive Effect of Contingently Issuable Shares	893,000	440,000	846,000	401,000