Note 11 - Income Taxes - Components of Deferred Income Tax Assets and (Liabilities) (Details) - USD ($)	Jun. 30, 2016	Jun. 30, 2015
Reserves against current assets	$ 679,000	$ 273,000
Accrued expenses	3,690,000	2,881,000
Goodwill, acquisition costs and intangible assets		255,000
Deferred compensation	842,000	791,000
Stock-based Compensation	1,473,000	1,213,000
State net operating loss carryover and credits	1,878,000	1,889,000
Deferred Tax Assets, Capital Loss Carryforwards	4,272,000	4,272,000
U.S. Federal net operating loss carryover and credits	456,000	506,000
Deferred income tax asset before valuation reserve	13,290,000	12,080,000
Valuation reserve	(6,150,000)	(6,161,000)
Deferred income tax asset	7,140,000	5,919,000
Depreciation	(4,270,000)	(4,454,000)
Goodwill, acquisition costs and intangible assets	(289,000)
Deferred income tax liability	(4,559,000)	(4,454,000)
Net deferred income tax asset	$ 2,581,000	$ 1,465,000