Note 6 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($)	Jun. 30, 2018	Jun. 30, 2017
Accrued compensation	$ 424,643	$ 615,000
Accounts receivable allowance	238,629	367,000
Intangible assets	148,884	287,000
Other	178,453	237,000
Net operating loss and other carryforwards	40,149,607	60,996,017
Total gross deferred assets	41,140,216	62,502,000
Less: Valuation Allowance	(34,916,654)	(49,247,000)
Deferred tax asset after valuation allowance	6,223,562	13,255,017
Depreciation	(197,084)	(705,000)
Warrant derivative	(85,268)	(331,000)
Change in accounting method	(124,895)	(371,000)
Total deferred tax liability	(407,247)	(1,407,000)
Net Deferred Tax Asset	$ 5,816,315	$ 11,848,017