Note 3 - Basis of Presentation and Summary of Significant Accounting Policies (Details Textual) - USD ($) xbrli-pure in Thousands		3 Months Ended		12 Months Ended
		Dec. 31, 2018	Sep. 30, 2018	Dec. 31, 2018	Dec. 31, 2017	Jan. 01, 2019	Jan. 01, 2017	Dec. 31, 2016
Impairment of Long-Lived Assets to be Disposed of				$ 0	$ 0
Impairment of Intangible Assets (Excluding Goodwill), Total				0	0
Goodwill, Impairment Loss		$ 2,700,000	$ 4,200,000	$ 6,929,258
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate				0.00%
Assets, Total		18,201,992		$ 18,201,992	$ 26,145,815
Cumulative Effect of New Accounting Principle in Period of Adoption	[1]
Liabilities, Total		$ 2,590,433		$ 2,590,433	4,915,871
Additional Paid-in Capital [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	[1]							$ 1,134
Accounting Standards Update 2016-09 [Member] | Additional Paid-in Capital [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption							$ 1,000
Accounting Standards Update 2016-09 [Member] | AOCI Attributable to Parent [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption							$ (1,000)
Minimum [Member]
Property, Plant and Equipment, Useful Life				2 years
Minimum [Member] | Accounting Standards Update 2016-02 [Member] | Subsequent Event [Member]
Assets, Total						$ 300,000
Liabilities, Total						300,000
Maximum [Member]
Property, Plant and Equipment, Useful Life				15 years
Maximum [Member] | Accounting Standards Update 2016-02 [Member] | Subsequent Event [Member]
Assets, Total						400,000
Liabilities, Total						$ 400,000
Fair Value, Inputs, Level 3 [Member] | Convertible Note, Series B [Member]
Convertible Debt, Fair Value Disclosures					$ 600,000

[1] In 2017, the Company adopted provisions of ASU 2016-09, Improvements to Employee Share Based Payment Accounting, resulting in a cumulative effect adjustment to Accumulated Deficit and Additional Paid-in Capital for previously unrecognized stock-based compensation expense.