Note 1 - Interim Financial Statements (Details Textual)	3 Months Ended
	Mar. 31, 2016 USD ($)	Jun. 30, 2014 USD ($)
Number of Financial Institutions with which Cash is Maintained	2
Cash, Uninsured Amount	$ 209,348
Loss Contingency, Estimate of Possible Loss, Percentage		41.00%
Loss Contingency, Estimate of Possible Loss	13,500,000	$ 47,700,000
Loss Contingency, Estimate of Change in Revenue	(8,900,000)
Loss Contingency, Estimate of Change in Cost of Sales	$ 4,600,000