Goodwill and Related Intangible Assets (Tables)

3 Months Ended

Mar. 31, 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 three months ended March 31, 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	—		895		379		1,274
Balance at March 31, 2016	$	181,285	$	54,599	$	57,780	$	293,664

Schedule Of Acquired Intangible Assets

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

	March 31, 2016				December 31, 2015
	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization		Estimated Life
Indefinite-lived intangible assets:
Trademarks	$	50,658	$	—	$	50,538	$	—	Indefinite
Finite-lived intangible assets:
Trademarks	5,842		1,970		5,861		1,884		5 to 15 Years
Unpatented technology	25,665		8,662		28,072		10,656		5 to 20 Years
Customer relationships	79,714		30,855		85,419		35,673		5 to 17 Years
Non-compete agreements	1,649		392		3,107		1,771		4 to 10 Years
Backlog	—		—		6,480		6,480		0.5 to 2 Years
	112,870		41,879		128,939		56,464
Total acquired intangible assets	$	163,528	$	41,879	$	179,477	$	56,464

Schedule of Acquired Intangible Asset Amortization Expense

The following table summarizes the acquired intangible asset amortization expense for the three months ended March 31 (in thousands):

	Three Months Ended   March 31,
	2016		2015
Amortization expense	$	2,181	$	1,426

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	$6,453
2017	$8,314
2018	$7,759
2019	$7,076
2020	$6,562
2021	$5,960