XML 58 R47.htm IDEA: XBRL DOCUMENT v3.19.1
Note 11 - Income Taxes - Income Tax Reconciliation (Details) - USD ($)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Tax at statutory rates $ 307,830 $ 199,270
Statutory depletion (18,175) (29,994)
Section 179 deduction (1,149)
State income tax 62,137 12,475
Other (7,272)
Income tax on income $ 350,643 $ 174,479