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Note 12 - Segment Reporting (Details Textual)	3 Months Ended		9 Months Ended
	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)
Number of Operating Segments			3
Revenue from Contract with Customer, Including Assessed Tax	$ 8,118,627	$ 4,329,459	$ 18,579,447	$ 11,729,727
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property	0	6,894,109	0	6,894,109
Intersegment Eliminations [Member]
Revenue from Contract with Customer, Including Assessed Tax			(497,000)	(122,000)
SDC [Member] | Intersegment Eliminations [Member]
Revenue from Contract with Customer, Including Assessed Tax	$ 72,409	$ 6,882	$ 497,306	$ 121,920

X

- Definition

Amount of gain (loss) on sale or disposal of property, plant and equipment assets, excluding oil and gas property and timber property.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-Name Accounting Standards Codification
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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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