Note 7 - Stock-Based Compensation	3 Months Ended
Mar. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	NOTE 7 — Stock-Based Compensation The Company recognizes the compensation cost in the financial statements for all stock-based awards to employees, including grants of employee stock options, based on the fair value of the awards as of the date that the awards are issued. The fair values of stock options are generally determined using a binomial lattice valuation model which incorporates assumptions about expected volatility, risk-free interest rate, dividend yield, and expected life. Compensation cost for stock-based awards is recognized on a straight-line basis over the vesting period. Total stock-based compensation expense for the three months ended March 31, 2018 and 2017, was $112,133 and $95,697, respectively. No stock options were granted during the first quarter of 2018.

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-URI http://asc.fasb.org/topic&trid=2228938

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 50
-URI http://asc.fasb.org/subtopic&trid=2208855

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