Goodwill and Related Intangible Assets (Tables)

9 Months Ended

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