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Note 7 - Equity Method and Other Investments and Related Commitments and Contingent Liabilities Including Guarantees (Details Textual)	12 Months Ended
	Dec. 31, 2018 USD ($) a	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 1992 a
Operating Leases, Rent Expense, Total	$ 30,000	$ 30,000
Equity Method Investments	881,860	991,094
Notes, Loans and Financing Receivable, Net, Current, Total	218,158	175,000
Other Long-term Investments	$ 1,689,249	1,633,300
OKC Industrial Properties [Member]
Area of Land \| a	46				260
Broadway Sixty-Eight Partnership [Member]
Equity Method Investment, Ownership Percentage	33.00%
Equity Method Investments	$ 172,722	171,243
Grand Woods Development, LLC [Member]
Equity Method Investment, Ownership Percentage	47.00%
Equity Method Investments	$ 438,303	544,603
Area of Real Estate Property \| a	26.56
Loan Guaranteed	$ 1,000,000
Loans Payable, Total	1,595,750
Notes, Loans and Financing Receivable, Net, Current, Total	$ 43,158
QSN Office Park [Member]
Equity Method Investment, Ownership Percentage	20.00%
Equity Method Investments	$ 270,835	275,248
Loan Guaranteed	$ 521,602
OKC Industrial Properties [Member]
Other Investment, Ownership Percentage	10.00%
Other Long-term Investments	$ 56,164	56,164
Bailey [Member]
Other Investment, Ownership Percentage	10.00%
Other Long-term Investments	$ 80,377	80,377
Cloudburst Solutions [Member]
Notes, Loans and Financing Receivable, Net, Current, Total	$ 175,000
Other Investment, Ownership Percentage	10.625%
Other Long-term Investments	$ 1,294,375	1,250,000
Payments to Acquire Interest in Subsidiaries and Affiliates, Total	$ 44,375		$ 750,000	$ 500,000
Ocean [Member]
Other Investment, Ownership Percentage	12.44%
Other Long-term Investments	$ 218,018	$ 206,444