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Segment Information
 3 Months Ended
Mar. 31, 2018
Segment Reporting Information, Revenue for Reportable Segment [Abstract]  
SEGMENT INFORMATION
SEGMENT INFORMATION

The Company is organized into three reportable segments on the basis of the production process and products and services provided by each segment, identified as follows:
(i)
Residential Products, which primarily includes roof and foundation ventilation products, centralized mail systems and electronic package solutions, rain dispersion products and roofing accessories;
(ii)
Industrial and Infrastructure Products, which primarily includes expanded and perforated metal, expansion joints, structural bearings and perimeter security; and
(iii)
Renewable Energy and Conservation, which primarily includes designing, engineering, manufacturing and installation of solar racking systems and greenhouse structures.
When determining the reportable segments, the Company aggregated operating segments based on their similar economic and operating characteristics.
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,
 
2018
 
2017
Net sales:
 
 
 
Residential Products
$
103,948

 
$
104,551

Industrial and Infrastructure Products
54,624

 
50,718

Less: Intersegment sales
(221
)
 
(456
)
Net Industrial and Infrastructure Products
54,403

 
50,262

Renewable Energy and Conservation
56,986

 
51,792

Total consolidated net sales
$
215,337

 
$
206,605

 
 
 
 
Income from operations:
 
 
 
Residential Products
$
13,238

 
$
15,641

Industrial and Infrastructure Products
2,602

 
(37
)
Renewable Energy and Conservation
4,062

 
3,340

Unallocated Corporate Expenses
(6,059
)
 
(9,265
)
Total income from operations
$
13,843

 
$
9,679



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, 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

 
Three Months Ended March 31, 2017
 
Residential Products
 
Industrial and Infrastructure Products
 
Renewable Energy and Conservation
 
Total
Net sales:
 
 
 
 
 
 
 
Point in Time
$
104,551

 
$
50,262

 
$
5,793

 
$
160,606

Over Time
—

 
—

 
45,999

 
45,999

Total
$
104,551

 
$
50,262

 
$
51,792

 
$
206,605