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Goodwill and Related Intangible Assets (Tables) | 9 Months Ended
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Sep. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule Of Changes In Carrying Amount Of Goodwill | The changes in the carrying amount of goodwill for the nine months ended September 30, 2016 are as follows (in thousands):
| Residential Products |  | Industrial and Infrastructure Products |  | Renewable Energy & Conservation |  | Total
Balance at December 31, 2015 | $ | 181,285 |  |  | $ | 53,704 |  |  | $ | 57,401 |  |  | $ | 292,390 |
Foreign currency translation | — |  |  | 298 |  |  | 2,170 |  |  | 2,468 |
Balance at September 30, 2016 | $ | 181,285 |  |  | $ | 54,002 |  |  | $ | 59,571 |  |  | $ | 294,858 |
Schedule Of Acquired Intangible Assets | Acquired intangible assets consist of the following (in thousands):
| September 30, 2016 |  | December 31, 2015 |  |
| Gross Carrying Amount |  | Accumulated Amortization |  | Gross Carrying Amount |  | Accumulated Amortization |  | Estimated Life
Indefinite-lived intangible assets: |  |  |  |  |  |  |  |  |
Trademarks | $ | 50,827 |  |  | $ | — |  |  | $ | 50,538 |  |  | $ | — |  |  | Indefinite
Finite-lived intangible assets: |  |  |  |  |  |  |  |  |
Trademarks | 5,828 |  |  | 2,278 |  |  | 5,861 |  |  | 1,884 |  |  | 5 to 15 Years
Unpatented technology | 25,663 |  |  | 9,590 |  |  | 28,072 |  |  | 10,656 |  |  | 5 to 20 Years
Customer relationships | 79,156 |  |  | 32,322 |  |  | 85,419 |  |  | 35,673 |  |  | 5 to 17 Years
Non-compete agreements | 1,649 |  |  | 545 |  |  | 3,107 |  |  | 1,771 |  |  | 4 to 10 Years
Backlog | — |  |  | — |  |  | 6,480 |  |  | 6,480 |  |  | 0.5 to 2 Years
| 112,296 |  |  | 44,735 |  |  | 128,939 |  |  | 56,464 |  |  |
Total acquired intangible assets | $ | 163,123 |  |  | $ | 44,735 |  |  | $ | 179,477 |  |  | $ | 56,464 |  |  |
Schedule of Acquired Intangible Asset Amortization Expense | The following table summarizes the acquired intangible asset amortization expense for the three and nine months ended September 30 (in thousands):
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2016 |  | 2015 |  | 2016 |  | 2015
Amortization expense | $ | 2,159 |  |  | $ | 4,783 |  |  | $ | 6,541 |  |  | $ | 8,794 |
Schedule Of Amortization Expense | Amortization expense related to acquired intangible assets for the remainder of fiscal 2016 and the next five years thereafter is estimated as follows (in thousands):
2016 | $2,157
2017 | $8,366
2018 | $7,811
2019 | $7,127
2020 | $6,613
2021 | $6,011

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- Definition Tabular disclosure of the characteristics, including initial carrying value, residual amount, weighted average useful life, of finite-lived intangible assets acquired during the period by major class. A major class is composed of intangible assets that can be grouped together because they are similar, either by nature or by their use in the operations of the company. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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- Definition Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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