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Note 1 - Nature of Business and Significant Accounting Policies (Details Textual) - USD ($)
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2017
Dec. 31, 2016
Deposit Assets, Stumpage Agreements $ 94,600 $ 94,600 $ 54,300
Impairment of Long-Lived Assets Held-for-use   0 0
Allowance for Doubtful Accounts Receivable, Current $ 0 0 0
Period Subject To Examination Federal And State Income Tax Returns 3 years    
Unrecognized Tax Benefits $ 0 0  
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued 0 0  
Surface Revenue Arrangement [Member] | Accounts Payable and Accrued Liabilities [Member]      
Deferred Revenue, Current $ 45,651 $ 45,651 $ 0