Note 2 - Summary of Significant Accounting Policies (Details Textual)
|
12 Months Ended |
|
Dec. 31, 2016
USD ($)
|
Dec. 31, 2015
USD ($)
|
Dec. 31, 2014
USD ($)
|
| Accounts Receivable, Gross, Current |
$ 95,000
|
$ 30,000
|
|
| Advertising Expense |
83,000
|
76,000
|
$ 252,000
|
| Interest Paid |
9,000
|
4,000
|
0
|
| Cash Equivalents, at Carrying Value |
0
|
0
|
|
| Allowance for Doubtful Accounts Receivable, Current |
0
|
0
|
|
| Impairment of Long-Lived Assets Held-for-use |
0
|
0
|
0
|
| Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense |
$ 0
|
0
|
$ 0
|
| Minimum [Member] |
|
|
|
| Property, Plant and Equipment, Useful Life |
1 year
|
|
|
| Finite-Lived Intangible Asset, Useful Life |
10 years
|
|
|
| Maximum [Member] |
|
|
|
| Property, Plant and Equipment, Useful Life |
5 years
|
|
|
| Finite-Lived Intangible Asset, Useful Life |
17 years
|
|
|
| Customer Concentration Risk [Member] | Two Major Customers [Member] |
|
|
|
| Accounts Receivable, Gross, Current |
$ 95,000
|
$ 30,000
|
|
| Accounts Receivable [Member] | Customer Concentration Risk [Member] |
|
|
|
| Concentration Risk, Number of Major Customers |
2
|
3
|
|
| Accounts Receivable [Member] | Customer Concentration Risk [Member] | Two Major Customers [Member] |
|
|
|
| Concentration Risk, Percentage |
100.00%
|
|
|
| Accounts Receivable [Member] | Customer Concentration Risk [Member] | Three Major Customers [Member] |
|
|
|
| Concentration Risk, Percentage |
|
100.00%
|
|
| Sales Revenue, Goods, Net [Member] | Customer Concentration Risk [Member] |
|
|
|
| Concentration Risk, Number of Major Customers |
3
|
3
|
4
|
| Sales Revenue, Goods, Net [Member] | Customer Concentration Risk [Member] | Three Major Customers [Member] |
|
|
|
| Concentration Risk, Percentage |
73.00%
|
52.00%
|
|
| Sales Revenue, Goods, Net [Member] | Customer Concentration Risk [Member] | Four Major Customers [Member] |
|
|
|
| Concentration Risk, Percentage |
|
|
84.00%
|