Segment Information (Tables)

3 Months Ended

Mar. 31, 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 months ended March 31, (in thousands):

	Three Months Ended   March 31,
	2019			2018
Net sales:
Residential Products	$	103,709		$	103,948
Industrial and Infrastructure Products	55,188			54,624
Less: Intersegment sales	(317		)	(221		)
Net Industrial and Infrastructure Products	54,871			54,403
Renewable Energy and Conservation	68,837			56,986
Total consolidated net sales	$	227,417		$	215,337
Income from operations:
Residential Products	$	12,090		$	13,238
Industrial and Infrastructure Products	4,129			2,602
Renewable Energy and Conservation	1,632			4,062
Unallocated Corporate Expenses	(7,285		)	(6,059		)
Total income from operations	$	10,566		$	13,843

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

	Three Months Ended March 31, 2018
	Residential Products		Industrial and Infrastructure Products		Renewable Energy and Conservation		Total
Net sales:
Point in Time	$	102,884	$	46,543	$	5,620	$	155,047
Over Time	1,064		7,860		51,366		60,290
Total	$	103,948	$	54,403	$	56,986	$	215,337