Segment Information (Measurements Used by Management to Assess Performance of Segments) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net sales:	$ 1,389,966	$ 1,339,783	$ 1,032,578
Income from operations:	130,102	96,988	107,190
Depreciation and amortization	26,167	31,966	20,915
Total assets	1,210,613	1,214,901	1,212,494
Capital expenditures	20,138	17,705	13,068
Discontinued Operations
Segment Reporting, Other Significant Reconciling Item [Line Items]
Total assets	0	0	77,438
Operating Segments
Segment Reporting, Other Significant Reconciling Item [Line Items]
Income from operations:	163,618	133,959	142,401
Unallocated Corporate Expenses
Segment Reporting, Other Significant Reconciling Item [Line Items]
Income from operations:	(33,516)	(36,971)	(35,211)
Depreciation and amortization	1,190	219	300
Total assets	24,448	21,246	28,057
Capital expenditures	1,424	3,869	7,101
Renewables
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net sales:	377,567	432,096	238,107
Renewables | Operating Segments
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net sales:	377,567	432,096	238,107
Income from operations:	25,243	20,158	30,105
Depreciation and amortization	8,467	14,682	3,377
Total assets	392,368	445,486	402,797
Capital expenditures	3,589	4,268	423
Residential
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net sales:	767,248	635,505	522,814
Residential | Operating Segments
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net sales:	767,248	635,505	522,814
Income from operations:	126,458	105,821	94,430
Depreciation and amortization	8,983	8,694	8,110
Total assets	519,567	453,469	407,132
Capital expenditures	10,050	4,182	3,313
Agtech
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net sales:	168,868	199,161	209,460
Agtech | Operating Segments
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net sales:	168,868	199,161	209,460
Income from operations:	2,914	(931)	10,633
Depreciation and amortization	4,377	5,279	6,068
Total assets	193,966	212,038	216,274
Capital expenditures	3,177	3,289	720
Infrastructure
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net sales:	76,283	73,021	62,197
Infrastructure | Operating Segments
Segment Reporting, Other Significant Reconciling Item [Line Items]
Net sales:	76,283	73,021	62,197
Income from operations:	9,003	8,911	7,233
Depreciation and amortization	3,150	3,092	3,060
Total assets	80,264	82,662	80,796
Capital expenditures	$ 1,898	$ 2,097	$ 1,511