Note 10 - 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	Payments
2018	$	651,376
2019		475,638
2020		339,287
2021		269,962
2022		266,000
Thereafter		44,549
Total	$	2,046,812

Schedule Of Minimum Royalty Payments [Table Text Block]

Year	Payment
2018	$	112,500
Total	$	112,500