Note 8 - Leases (Details Textual)	9 Months Ended
Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)
Operating Lease, Right-of-Use Asset, Amortization	$ 29,759
Operating Lease, Expense	$ 12,754	$ 16,842
Office Building [Member]
Number of Operating Leases	1

Amount of operating lease expense. Excludes sublease income.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 4
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918638-209977

Name:	us-gaap_OperatingLeaseExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration