Exit Activity Costs and Asset Impairments (Schedule Of Asset Impairment Charges Related To Restructuring Activities) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Restructuring Cost and Reserve [Line Items]
Exit activity costs (recoveries)	$ 6,039	$ 7,020	$ 2,207
Asset impairment charges	2,276	1,193	81
Restructuring charges	8,315	8,213	2,288
Corporate
Restructuring Cost and Reserve [Line Items]
Exit activity costs (recoveries)	250	145	375
Asset impairment charges	0	0	0
Restructuring charges	250	145	375
Renewables | Operating Segments
Restructuring Cost and Reserve [Line Items]
Exit activity costs (recoveries)	3,256	4,769	15
Asset impairment charges	1,198	1,193	0
Restructuring charges	4,454	5,962	15
Residential | Operating Segments
Restructuring Cost and Reserve [Line Items]
Exit activity costs (recoveries)	1,825	393	731
Asset impairment charges	12	0	9
Restructuring charges	1,837	393	740
Infrastructure | Operating Segments
Restructuring Cost and Reserve [Line Items]
Exit activity costs (recoveries)	(63)	26	226
Asset impairment charges	0	0	0
Restructuring charges	(63)	26	226
Agtech | Operating Segments
Restructuring Cost and Reserve [Line Items]
Exit activity costs (recoveries)	771	1,687	860
Asset impairment charges	1,066	0	72
Restructuring charges	$ 1,837	$ 1,687	$ 932