Goodwill and Related Intangible Assets (Tables)

6 Months Ended

Jun. 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 six months ended June 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	—		368		2,039		2,407
Balance at June 30, 2016	$	181,285	$	54,072	$	59,440	$	294,797

Schedule Of Acquired Intangible Assets

Acquired intangible assets consist of the following (in thousands):

	June 30, 2016				December 31, 2015
	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization		Estimated Life
Indefinite-lived intangible assets:
Trademarks	$	50,805	$	—	$	50,538	$	—	Indefinite
Finite-lived intangible assets:
Trademarks	5,840		2,126		5,861		1,884		5 to 15 Years
Unpatented technology	25,661		9,126		28,072		10,656		5 to 20 Years
Customer relationships	79,074		30,874		85,419		35,673		5 to 17 Years
Non-compete agreements	1,649		468		3,107		1,771		4 to 10 Years
Backlog	—		—		6,480		6,480		0.5 to 2 Years
	112,224		42,594		128,939		56,464
Total acquired intangible assets	$	163,029	$	42,594	$	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 six months ended June 30 (in thousands):

	Three Months Ended   June 30,				Six Months Ended   June 30,
	2016		2015		2016		2015
Amortization expense	$	2,201	$	2,585	$	4,382	$	4,011

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	$4,303
2017	$8,347
2018	$7,791
2019	$7,107
2020	$6,594
2021	$5,992