Segment Information (Tables)

3 Months Ended

Mar. 31, 2020

Segment Reporting Information, Revenue for Reportable Segment [Abstract]

Reconciliation Of Sales To Earnings Before Income Taxes by Segment

The following table illustrates certain measurements used by management to assess performance of the segments described above for the three months ended March 31, (in thousands):

	Three Months Ended   March 31,
	2020			2019
Net sales:
Renewable Energy and Conservation	$	96,497		$	68,837
Residential Products	103,419			103,709
Industrial and Infrastructure Products	49,801			55,188
Less: Intersegment sales	(278		)	(317		)
Net Industrial and Infrastructure Products	49,523			54,871
Total consolidated net sales	$	249,439		$	227,417
Income from operations:
Renewable Energy and Conservation	$	5,699		$	1,632
Residential Products	13,725			12,090
Industrial and Infrastructure Products	3,989			4,129
Unallocated Corporate Expenses	(8,223		)	(7,285		)
Total consolidated income from operations	$	15,190		$	10,566

Disaggregation of Revenue

The following tables illustrate revenue disaggregated by timing of transfer of control to the customer for the three months ended March 31 (in thousands):

	Three Months Ended March 31, 2020
	Renewable Energy and Conservation		Residential Products		Industrial and Infrastructure Products		Total
Net sales:
Point in Time	$	14,588	$	102,331	$	39,495	$	156,414
Over Time	81,909		1,088		10,028		93,025
Total net sales	$	96,497	$	103,419	$	49,523	$	249,439

	Three Months Ended March 31, 2019
	Renewable Energy and Conservation		Residential Products		Industrial and Infrastructure Products		Total
Net sales:
Point in Time	$	7,290	$	102,892	$	45,287	$	155,469
Over Time	61,547		817		9,584		71,948
Total net sales	$	68,837	$	103,709	$	54,871	$	227,417