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Note 12 - Leases - Operating Lease Balance Sheet Information (Details) - USD ($)	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019	Jan. 01, 2019	Dec. 31, 2018
Operating lease cost	$ 46,562	$ 132,524
Short-term lease cost	10,145	41,535
Sublease income
Total lease cost	56,707	174,059
Operating lease right-of-use assets	611,883	611,883	$ 602,937	$ 0
Operating lease liabilities, current portion	178,130	178,130	135,519	0
Operating lease liabilities, net of current portion	426,879	426,879	$ 454,823	$ 0
Total	$ 605,009	$ 605,009
Weighted average remaining lease term (in years) – operating leases (Year)	3 years 197 days	3 years 197 days
Weighted average discount rate – operating leases	5.50%	5.50%

X

- Definition

Amount of lease cost recognized by lessee for lease contract.

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Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

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Present value of lessee's discounted obligation for lease payments from operating lease.

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Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.

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Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.

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Amount of lessee's right to use underlying asset under operating lease.

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Weighted average discount rate for operating lease calculated at point in time.

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Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of short-term lease cost, excluding expense for lease with term of one month or less.

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Amount of sublease income excluding finance and operating lease expense.

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