Note 4 - Revenue From Contracts With Customers (Tables)

3 Months Ended

Mar. 31, 2022

Notes Tables

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

	For the Three Months
	Ended March 31,
(in thousands)	2022			2021
Total contract liabilities - beginning of period	$	6,503		$	4,873
Other contract additions, net		6,905			210
Revenue recognized		(6,938	)		(877	)
Contract settlements		—			(3,129	)
Total contract liabilities - end of period	$	6,470		$	1,077

Disaggregation of Revenue [Table Text Block]

	For the Three Months								For the Three Months
	Ended March 31, 2022								Ended March 31, 2021
(in thousands)	Electric Power		Telecommunications		Renewables		Total		Electric Power		Telecommunications		Renewables		Total
Utilities	$	39,251	$	—	$	—	$	39,251	$	3,189	$	—	$	—	$	3,189
Telecommunications		—		16,095		—		16,095		—		—		—		—
Solar		—		—		14,464		14,464		—		—		2,372		2,372
Other		444		—		—		444		—		—		—		—
Total revenues	$	39,695	$	16,095	$	14,464	$	70,254	$	3,189		—	$	2,372	$	5,561

	For the Three Months								For the Three Months
	Ended March 31, 2022								Ended March 31, 2021
(in thousands)	Electric Power		Telecommunications		Renewables		Total		Electric Power		Telecommunications		Renewables		Total
Cost-plus contracts	$	17,237	$	112	$	—	$	17,349	$	1,354	$	—	$	—	$	1,354
Fixed price contracts		7,742		2,319		14,464		24,525		470		—		2,372		2,842
Unit price contracts		14,716		13,664		—		28,380		1,365		—		—		1,365
Total revenues	$	39,695	$	16,095	$	14,464	$	70,254	$	3,189	$	—	$	2,372	$	5,561