Note 21 - Reportable Segment Information - Reconciliation of Segment Gross (Loss) Profit to Consolidated Loss (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Range of increase in gross profit from each project, net		$ 51,652	$ 101,960	$ 98,232	$ 53,712	$ 93,319	$ 113,015	$ 81,048	$ 17,271	$ 305,556	$ 304,653	$ 189,785
Selling, general and administrative expenses										243,083	252,879	238,147
Other costs (see Note 1)										95,155	36,964	6,735
Gain on sales of property and equipment (see Note 11)	$ (19,800)									(33,781)	(4,925)	(13,373)
Total other expense (income), net										10,595	11,590	(1,500)
Income (loss) from continuing operations before provision for (benefit from) income taxes										$ (9,496)	$ 8,145	$ (40,224)