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Segment Information (Tables)
 12 Months Ended
Dec. 31, 2015
Segment Reporting Information, Revenue for Reportable Segment [Abstract]  
Measurements Used by Management to Assess Performance of Segments
The following table illustrates certain measurements used by management to assess the performance of the segments described above as of and for the years ended December 31 (in thousands):
 
2015
 
2014
 
2013
Net sales:
 
 
 
 
 
Residential Products
$
475,653

 
$
431,915

 
$
394,071

Industrial and Infrastructure Products
378,224

 
431,432

 
435,168

Less: Intersegment sales
(1,536
)
 
(1,260
)
 
(1,672
)
 
376,688

 
430,172

 
433,496

Renewable Energy and Conservation
188,532

 
—

 
—

Total consolidated net sales
$
1,040,873

 
$
862,087

 
$
827,567

 
 
 
 
 
 
Income (loss) from operations:
 
 
 
 
 
Residential Products
$
46,804

 
$
16,416

 
$
34,965

Industrial and Infrastructure Products
15,581

 
(74,634
)
 
7,169

Renewable Energy and Conservation
12,659

 
—

 
—

Unallocated Corporate Expenses
(26,959
)
 
(12,199
)
 
(20,654
)
 
$
48,085

 
$
(70,417
)
 
$
21,480

Depreciation and Amortization
 
 
 
 
 
Residential Products
$
9,967

 
$
10,699

 
$
11,421

Industrial and Infrastructure Products
12,108

 
13,910

 
14,688

Renewable Energy and Conservation
7,811

 
—

 
—

Unallocated Corporate Expenses
662

 
823

 
941

 
$
30,548

 
$
25,432

 
$
27,050

Total assets
 
 
 
 
 
Residential Products
$
363,339

 
$
394,092

 
$
389,506

Industrial and Infrastructure Products
273,987

 
308,150

 
411,093

Renewable Energy and Conservation
215,211

 
—

 
—

Unallocated Corporate Expenses
37,235

 
108,229

 
88,972

 
$
889,772

 
$
810,471

 
$
889,571

Capital expenditures
 
 
 
 
 
Residential Products
$
3,328

 
$
12,731

 
$
5,937

Industrial and Infrastructure Products
4,846

 
10,425

 
8,755

Renewable Energy and Conservation
3,871

 
—

 
—

Unallocated Corporate Expenses
328

 
135

 
248

 
$
12,373

 
$
23,291

 
$
14,940
Net Sales by Region or Origin and Long-Lived Assets by Region of Domicile
Net sales by region or origin and long-lived assets by region of domicile for the years ended and as of December 31 are as follows (in thousands):
 
2015
 
2014
 
2013
Net sales
 
 
 
 
 
North America
$
968,414

 
$
816,473

 
$
784,926

Europe
48,216

 
45,614

 
42,641

Asia
24,243

 
—

 
—

Total
$
1,040,873

 
$
862,087

 
$
827,567

 
 
 
 
 
 
Long-lived assets
 
 
 
 
 
North America
$
110,571

 
$
122,824

 
$
125,816

Europe
11,084

 
8,957

 
8,210

Asia
1,292

 
—

 
—

Total
$
122,947

 
$
131,781

 
$
134,026