Note 13 - Commitments (Tables)

3 Months Ended

Mar. 31, 2020

Notes Tables

Lease, Cost and Other Information [Table Text Block]

Lease cost	Three Months Ended March 31, 2020		Three Months Ended  March 31, 2019
Cash paid for operating lease liabilities	$	17,264	$	39,555
Cash paid for finance lease liabilities	$	2,252	$	-
Right-of-use assets obtained in exchange for new operating lease liabilities (1)	$	663,009	$	166,292
Property and equipment obtained in exchange for new finance lease liabilities	$	43,242
(1) For the three months ended March 31, 2019, the balance includes operating leases existing as of the adoption of ASC 842 on January 1, 2019.
Weighted-average remaining lease term - operating leases (years)		7.0		0.4
Weighted-average remaining lease term- finance leases (years)		4.8		0.0