Note 5 - Income Taxes (Tables)
|12 Months Ended|
Dec. 31, 2015
|Income Tax Disclosure [Abstract]|
|Components of net deferred income tax assets||
Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets.
Reference 1: http://www.xbrl.org/2003/role/presentationRef