Note 9 - Retirement Plans (Details Textual) - USD ($) |
12 Months Ended | |
|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
|
| Defined Contribution Plan, Employer Matching Contribution, Percent of Match | 25.00% | 25.00% |
| Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay | 6.00% | 6.00% |
| Defined Contribution Plan, Employer Discretionary Contribution Amount | $ 0 | $ 0 |
| Defined Contribution Plan, Cost | $ 32,162 | $ 30,599 |
| X | ||||||||||
- Definition Amount of cost for defined contribution plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of discretionary contributions made by an employer to a defined contribution plan. No definition available.
|
| X | ||||||||||
- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. No definition available.
|
| X | ||||||||||
- Definition Percentage employer matches of the employee's percentage contribution matched. No definition available.
|