Note 9 - Leases - Lessors: schedule of future minimum rentals (Details) |
12 Months Ended |
|---|---|
|
Dec. 31, 2017
USD ($)
| |
| 2018 | |
| Future minimum rentals | $ 160,470 |
| 2019 | |
| Future minimum rentals | 160,470 |
| 2020 | |
| Future minimum rentals | 160,470 |
| 2021 | |
| Future minimum rentals | 120,352 |
| Future minimum rentals | $ 601,762 |