Note 6 - Operating Leases (Tables)

3 Months Ended

Mar. 31, 2019

Notes Tables

Lessee, Operating Lease, Liability, Maturity [Table Text Block]

Year	Amount
Remainder of 2019	$	139,727
2020		142,726
2021		145,726
2022		74,238
Total lease payments		502,417
Less: Interest		(41,956	)
Net present value of lease liabilities	$	460,461

Operating Lease, Weighted Average Remaining Lease Terms and Discount Rates [Table Text Block]

Weighted average lease term (months)	45
Weighted average discount rate	4.89	%