Segment Information (Tables)

9 Months Ended

Sep. 30, 2019

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 and nine months ended September 30, (in thousands):

	Three Months Ended   September 30,						Nine Months Ended   September 30,
	2019			2018			2019			2018
Net sales:
Renewable Energy and Conservation	$	116,771		$	98,486		$	261,612		$	229,187
Residential Products	$	126,275		$	125,839		$	360,417		$	360,915
Industrial and Infrastructure Products	56,361			56,033			168,096			172,218
Less: Intersegment sales	(171		)	(272		)	(817		)	(861		)
Net Industrial and Infrastructure Products	56,190			55,761			167,279			171,357
Total consolidated net sales	$	299,236		$	280,086		$	789,308		$	761,459
Income from operations:
Renewable Energy and Conservation	$	19,633		$	15,072		$	30,914		$	28,690
Residential Products	17,012			20,138			49,880			57,572
Industrial and Infrastructure Products	5,462			2,892			13,660			12,098
Unallocated Corporate Expenses	(10,687		)	(8,698		)	(25,862		)	(22,839		)
Total consolidated income from operations	$	31,420		$	29,404		$	68,592		$	75,521

Disaggregation of Revenue

The following tables illustrate revenue disaggregated by timing of transfer of control to the customer for the three and nine months ended September 30 (in thousands):

	Three Months Ended September 30, 2019
	Renewable Energy and Conservation		Residential Products		Industrial and Infrastructure Products		Total
Net sales:
Point in Time	$	12,682	$	125,350	$	46,781	$	184,813
Over Time	104,089		925		9,409		114,423
Total net sales	$	116,771	$	126,275	$	56,190	$	299,236

	Three Months Ended September 30, 2018
	Renewable Energy and Conservation		Residential Products		Industrial and Infrastructure Products		Total
Net sales:
Point in Time	$	10,784	$	125,118	$	47,686	$	183,588
Over Time	87,702		721		8,075		96,498
Total net sales	$	98,486	$	125,839	$	55,761	$	280,086

	Nine Months Ended September 30, 2019
	Renewable Energy and Conservation		Residential Products		Industrial and Infrastructure Products		Total
Net sales:
Point in Time	$	28,441	$	357,808	$	138,383	$	524,632
Over Time	233,171		2,609		28,896		264,676
Total net sales	$	261,612	$	360,417	$	167,279	$	789,308

	Nine Months Ended September 30, 2018
	Renewable Energy and Conservation		Residential Products		Industrial and Infrastructure Products		Total
Net sales:
Point in Time	$	25,128	$	358,960	$	145,657	$	529,745
Over Time	204,059		1,955		25,700		231,714
Total net sales	$	229,187	$	360,915	$	171,357	$	761,459