Note 4 - Revenue From Contracts With Customers (Tables)

9 Months Ended

Sep. 30, 2022

Notes Tables

Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]

		For the Nine Months
		Ended September 30,
(in thousands)		2022				2021
Total contract liabilities - beginning of period		$	6,503			$	4,873
Other contract additions, net			1,003				720
Revenue recognized			(7,155	)			(754	)
Contract settlements			—				(3,141	)
Total contract liabilities - end of period		$	351			$	1,698

Disaggregation of Revenue [Table Text Block]

		For the Three Months																For the Three Months
		Ended September 30, 2022																Ended September 30, 2021
(in thousands)		Electric Power				Telecommunications				Renewables				Total				Electric Power				Telecommunications				Renewables				Total

Utilities		$	35,076			$	132			$	—			$	35,208			$	12,200			$	—			$	—			$	12,200
Telecommunications			532				23,932				—				24,464				—				8,742				—				8,742
Renewables			—				—				39,026				39,026				—				—				3,880				3,880
Other			1,124				—				—				1,124				—				—				—				—
Total revenues		$	36,732			$	24,064			$	39,026			$	99,822			$	12,200				8,742			$	3,880			$	24,822

		For the Nine Months																For the Nine Months
		Ended September 30, 2022																Ended September 30, 2021
(in thousands)		Electric Power				Telecommunications				Renewables				Total				Electric Power				Telecommunications				Renewables				Total

Utilities		$	114,363			$	132			$	—			$	114,495			$	20,297			$	—			$	—			$	20,297
Telecommunications			1,441				60,392				—				61,833				—				14,816				—				14,816
Renewables			—				—				85,770				85,770				—				—				6,789				6,789
Other			1,891				—				—				1,891				—				—				—				—
Total revenues		$	117,695			$	60,524			$	85,770			$	263,989			$	20,297			$	14,816			$	6,789			$	41,902

		For the Three Months																For the Three Months
		Ended September 30, 2022																Ended September 30, 2021
(in thousands)		Electric Power				Telecommunications				Renewables				Total				Electric Power				Telecommunications				Renewables				Total

Cost-plus contracts		$	8,672			$	—			$	—			$	8,672			$	4,940			$	—			$	—			$	4,940
Fixed price contracts			10,768				1,551				39,026				51,345				2,385				2,159				3,880				8,424
Unit price contracts			17,292				22,513				—				39,805				4,875				6,583				—				11,458
Total revenues		$	36,732			$	24,064			$	39,026			$	99,822			$	12,200			$	8,742			$	3,880			$	24,822

		For the Nine Months																For the Nine Months
		Ended September 30, 2022																Ended September 30, 2021
(in thousands)		Electric Power				Telecommunications				Renewables				Total				Electric Power				Telecommunications				Renewables				Total

Cost-plus contracts		$	33,282			$	112			$	—			$	33,394			$	7,757			$	—			$	—			$	7,757
Fixed price contracts			34,661				6,429				85,770				126,860				3,614				3,034				6,789				13,437
Unit price contracts			49,752				53,983				—				103,735				8,926				11,782				—				20,708
Total revenues		$	117,695			$	60,524			$	85,770			$	263,989			$	20,297			$	14,816			$	6,789			$	41,902