Note 9 - Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2017

Notes Tables

Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]

Year	Amount
2018		240,000
2019		97,000
2020		-
2021		-
2022 and thereafter		-
Total minimum payments	$	337,000