Note 12 - Commitments - Other Commitments (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Contractual obligation	$ 431,716	$ 431,716
Management Employment Agreements with Bonus and Severance Commitment Contingencies [Member]
Contractual obligation	350,000	350,000
Other Employee Severance Commitment Contingencies [Member]
Contractual obligation	$ 81,716	$ 81,716

Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

No definition available.

Name:	us-gaap_OtherCommitment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant