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

3 Months Ended

Mar. 31, 2022

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,
	2022		2021
Cash and cash equivalents at beginning of period	$	26,865	$	3,046
Restricted cash at beginning of period (1)		1,176		1,478
Cash, cash equivalents and restricted cash at beginning of period	$	28,041	$	4,524
Cash and cash equivalents at end of period	$	20,949	$	34,733
Restricted cash at end of period (1)		1,172		1,179
Cash, cash equivalents and restricted cash at end of period	$	22,121	$	35,912

Schedule of Accrued Liabilities [Table Text Block]

(in thousands)	March 31		December 31
	2022		2021
Accrued compensation	$	5,250	$	6,369
Working capital adjustment on Front Line Power Construction acquisition		14,092		14,092
Accrued interest		4,128		2,902
Accrued taxes payable		76		102
Other accrued expenses		6,978		4,836
Total accrued expense	$	30,524	$	28,301