Note 10 - Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

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

Year	Payments
2019	$	655,901
2020		414,973
2021		340,029
2022		340,270
Thereafter		76,243
Total	$	1,827,416

Schedule of Future Minimum Lease Payments for Capital Leases [Table Text Block]

Year	Payments
2019	$	131,067
2020		131,067
2021		52,398
Total minimum capital lease payments		314,532
Less: Amount representing interest		(23,682	)
Present value of minimum capital lease payments	$	290,850