Note 1 - Organization and Significant Accounting Policies (Details Textual) - USD ($)	3 Months Ended						9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Cash Equivalents, at Carrying Value, Total	$ 2,480,524						$ 2,480,524
Net Cash Provided by (Used in) Operating Activities, Total	845,795						845,795	$ 835,959
Net Working Capital	739,063						739,063
Net Income (Loss) Attributable to Parent, Total	(144,548)	$ (30,364)	$ (179,733)	$ (123,722)	$ 105,409	$ (113,242)	(354,645)	$ (131,555)
Retained Earnings (Accumulated Deficit), Ending Balance	(69,980,435)						$ (69,980,435)		$ (69,625,790)
Number of Reportable Segments							5
Commodity Contract Asset, Current	223,276						$ 223,276		171,785
Contract with Customer, Liability, Total	10,535						$ 10,535		$ 9,046
Contract with Customer, Liability, Revenue Recognized	$ 9,046
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	38,000			37,000			35,000	57,000
CANADA
Property and Equipment Net Percentages	100.00%						100.00%
CANADA | Revenue from Contract with Customer Benchmark [Member] | Customer Concentration Risk [Member]
Concentration Risk, Percentage	99.00%			96.00%			99.00%	95.00%
UNITED STATES | Revenue from Contract with Customer Benchmark [Member] | Customer Concentration Risk [Member]
Concentration Risk, Percentage	1.00%			4.00%			1.00%	5.00%