Note 1 - Nature of Operations, Basis of Presentation and Company Conditions (Tables)

3 Months Ended

Mar. 31, 2023

Notes Tables

Reconciliation of Cash and Cash Equivalents from Balance Sheet to Cash Flow Statement [Table Text Block]

	For the Three Months
(in thousands)	Ended March 31,
	2023		2022
Cash and cash equivalents at beginning of period	$	21,489	$	26,865
Restricted cash at beginning of period (1)		609		1,176
Cash, cash equivalents and restricted cash at beginning of period	$	22,098	$	28,041
Cash and cash equivalents at end of period	$	23,993	$	20,949
Restricted cash at end of period (1)		699		1,172
Cash, cash equivalents and restricted cash at end of period	$	24,692	$	22,121

Schedule of Accrued Liabilities [Table Text Block]

(in thousands)	March 31		December 31
	2023		2022
Accrued bonding	$	1,962	$	1,920
Accrued compensation		4,559		5,589
Working capital adjustment on Front Line Power Construction acquisition		4,592		4,592
Accrued interest payable		6,886		5,885
Accrued taxes payable		669		248
Accrued subcontractor expenses		16,274		11,299
Accrued union dues		874		937
Accrued vendor invoices and accrued other expenses		9,382		8,595
Total accrued expense	$	45,198	$	39,065