Note 11 - Deferred Revenue (Details Textual) - License Fees [Member] - USD ($) |
1 Months Ended | 6 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|
Jun. 21, 2013 |
Jul. 06, 2013 |
Dec. 31, 2017 |
Dec. 31, 2016 |
Jun. 21, 2014 |
|
| Period of License Agreement | 10 years | ||||
| Deferred Revenue, Additions | $ 250,000 | $ 250,000 | |||
| Deferred Revenue, Revenue Recognized | $ 25,000 | $ 25,000 | |||
| X | ||||||||||
- Definition The period of license agreement presented in years. No definition available.
|
| X | ||||||||||
- Definition Amount of deferred revenue recognized for transactions arising during the current reporting period. Deferred revenue is a liability as of the balance sheet date related to a revenue producing activity for which revenue has not yet been recognized. Generally, an Entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP. No definition available.
|
| X | ||||||||||
- Definition Amount of revenue recognized that was previously reported as deferred or unearned revenue. No definition available.
|
| X | ||||||||||
- Details
|