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v3.19.3.a.u2

Segment Information (Measurements Used by Management to Assess Performance of Segments) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales: | $ 258,131 | $ 299,236 | $ 262,655 | $ 227,417 | $ 240,913 | $ 280,086 | $ 266,036 | $ 215,337 | $ 1,047,439 | $ 1,002,372 | $ 986,918
Income from operations: | 19,247 | $ 31,420 | $ 26,606 | $ 10,566 | 18,447 | $ 29,404 | $ 32,274 | $ 13,843 | 87,839 | 93,968 | 92,849
Depreciation and amortization |  |  |  |  |  |  |  |  | 19,949 | 20,374 | 21,690
Total assets | 984,450 |  |  |  | 1,061,645 |  |  |  | 984,450 | 1,061,645 | 991,385
Capital expenditures |  |  |  |  |  |  |  |  | 11,184 | 12,457 | 11,399
Operating Segments |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |  |  |  |  |  |  |  |  |  |
Income from operations: |  |  |  |  |  |  |  |  | 124,060 | 122,597 | 115,270
Intersegment sales |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales: |  |  |  |  |  |  |  |  | (1,019) | (1,103) | (1,247)
Unallocated Corporate Expenses |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |  |  |  |  |  |  |  |  |  |
Income from operations: |  |  |  |  |  |  |  |  | (36,221) | (28,629) | (22,421)
Depreciation and amortization |  |  |  |  |  |  |  |  | 390 | 332 | 321
Total assets | 174,475 |  |  |  | 271,616 |  |  |  | 174,475 | 271,616 | 209,286
Capital expenditures |  |  |  |  |  |  |  |  | 581 | 175 | 421
Renewable Energy & Conservation |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales: |  |  |  |  |  |  |  |  | 373,023 | 317,253 | 306,351
Renewable Energy & Conservation | Operating Segments |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales: |  |  |  |  |  |  |  |  | 373,023 | 317,253 | 306,351
Income from operations: |  |  |  |  |  |  |  |  | 47,558 | 37,423 | 30,218
Depreciation and amortization |  |  |  |  |  |  |  |  | 6,132 | 5,790 | 5,657
Total assets | 246,853 |  |  |  | 218,048 |  |  |  | 246,853 | 218,048 | 219,806
Capital expenditures |  |  |  |  |  |  |  |  | 2,199 | 1,345 | 3,648
Residential Products |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales: |  |  |  |  |  |  |  |  | 461,630 | 463,216 | 466,603
Residential Products | Operating Segments |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales: |  |  |  |  |  |  |  |  | 461,630 | 463,216 | 466,603
Income from operations: |  |  |  |  |  |  |  |  | 63,047 | 69,838 | 76,893
Depreciation and amortization |  |  |  |  |  |  |  |  | 7,906 | 8,217 | 9,183
Total assets | 359,657 |  |  |  | 361,499 |  |  |  | 359,657 | 361,499 | 358,838
Capital expenditures |  |  |  |  |  |  |  |  | 4,968 | 7,921 | 5,236
Industrial and Infrastructure Products |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales: |  |  |  |  |  |  |  |  | 212,786 | 221,903 | 213,964
Industrial and Infrastructure Products | Operating Segments |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales: |  |  |  |  |  |  |  |  | 213,805 | 223,006 | 215,211
Income from operations: |  |  |  |  |  |  |  |  | 13,455 | 15,336 | 8,159
Depreciation and amortization |  |  |  |  |  |  |  |  | 5,521 | 6,035 | 6,529
Total assets | $ 203,465 |  |  |  | $ 210,482 |  |  |  | 203,465 | 210,482 | 203,455
Capital expenditures |  |  |  |  |  |  |  |  | $ 3,436 | $ 3,016 | $ 2,094

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