Note 2 - Summary of Significant Accounting Policies - Estimated Useful Life for the Intangible Assets (Details)	12 Months Ended
	Dec. 31, 2021
Order or Production Backlog [Member]
Finite-lived intangible asset, useful life (Year)	1 year
Customer Relationships - Front Line Power Construction [Member]
Finite-lived intangible asset, useful life (Year)	15 years
Trade name - Reach Construction Group [Member]
Finite-lived intangible asset, useful life (Year)	1 year
Customer List - Reach Construction Group, LLC [Member]
Finite-lived intangible asset, useful life (Year)	5 years
Non-Compete Agreements - Reach Construction Group, LLC [Member]
Finite-lived intangible asset, useful life (Year)	5 years
Customer Relationships - Gibson Technical Services [Member]
Finite-lived intangible asset, useful life (Year)	10 years
Customer Relationships - IMMCO [Member]
Finite-lived intangible asset, useful life (Year)	10 years
Technology - Know How [Member]
Finite-lived intangible asset, useful life (Year)	3 years
Non-compete Agreements -GTS [Member]
Finite-lived intangible asset, useful life (Year)	5 years
Computer Software, Intangible Asset [Member] | Minimum [Member]
Finite-lived intangible asset, useful life (Year)	3 years
Computer Software, Intangible Asset [Member] | Maximum [Member]
Finite-lived intangible asset, useful life (Year)	5 years