Note 8 - Summary of Stock Options (Details)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2015 USD ($) $ / shares shares	Jun. 30, 2014 USD ($) shares	Jun. 30, 2015 USD ($) $ / shares shares	Jun. 30, 2014 USD ($) shares	Dec. 31, 2014 shares
Note 8 - Summary of Stock Options (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price (in Dollars per share) | $ / shares	$ 0.88		$ 0.88
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross					735,000
Allocated Share-based Compensation Expense (in Dollars) | $	$ 48,000	$ 17,000	$ 90,000	$ 30,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options (in Dollars) | $	$ 592,000		$ 592,000
Employees [Member]
Note 8 - Summary of Stock Options (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	100,000	0	735,000	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share) | $ / shares	$ 0.18		$ 0.24
2005 Plan [Member]
Note 8 - Summary of Stock Options (Details) [Line Items]
Common Stock, Capital Shares Reserved for Future Issuance	22,095		22,095
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	22,095		22,095
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price (in Dollars per share) | $ / shares	$ 12.83		$ 12.83
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term			1 year 313 days
The 2006 Stock Option Plan [Member]
Note 8 - Summary of Stock Options (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	322,069		322,069
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price (in Dollars per share) | $ / shares	$ 1.54		$ 1.54
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term			7 years 116 days
Conversion of Stock, Exchange Ratio			0.0080497
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	0		0
The 2013 Plan [Member]
Note 8 - Summary of Stock Options (Details) [Line Items]
Common Stock, Capital Shares Reserved for Future Issuance	127,739		127,739
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	2,661,619		2,661,619
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price (in Dollars per share) | $ / shares	$ 0.70		$ 0.70
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term			9 years 87 days
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period			10 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period			4 years
Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Outstanding Stock Maximum			10.00%
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent			110.00%
Holdings Greater than 10% of Shares Outstanding [Member] | The 2013 Plan [Member]
Note 8 - Summary of Stock Options (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period			5 years
Employee Stock Option [Member]
Note 8 - Summary of Stock Options (Details) [Line Items]
Allocated Share-based Compensation Expense (in Dollars) | $	$ 48,000	$ 17,000	$ 90,000	$ 30,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition			3 years 120 days
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate	0.00%		0.00%