Goodwill and Related Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2017

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, 2017 are as follows (in thousands):

	Residential Products		Industrial and Infrastructure Products		Renewable Energy & Conservation			Total
Balance at December 31, 2016	$	181,285	$	53,884	$	68,863		$	304,032
Acquired goodwill	16,710		—		—			16,710
Adjustments to prior year acquisitions	—		—		(832		)	(832		)
Foreign currency translation	—		46		455			501
Balance at March 31, 2017	$	197,995	$	53,930	$	68,486		$	320,411

Schedule Of Acquired Intangible Assets

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

	March 31, 2017				December 31, 2016
	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization		Estimated Life
Indefinite-lived intangible assets:
Trademarks	$	45,352	$	—	$	44,720	$	—	Indefinite
Finite-lived intangible assets:
Trademarks	5,815		2,584		5,808		2,427		5 to 15 Years
Unpatented technology	28,020		10,519		26,720		10,041		5 to 20 Years
Customer relationships	80,596		35,096		78,569		33,585		5 to 17 Years
Non-compete agreements	1,649		700		1,649		623		4 to 10 Years
Backlog	900		900		900		900		0.5 to 2 Years
	116,980		49,799		113,646		47,576
Total acquired intangible assets	$	162,332	$	49,799	$	158,366	$	47,576

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,
	2017		2016
Amortization expense	$	2,162	$	2,181

Schedule Of Amortization Expense

Amortization expense related to acquired intangible assets for the remainder of fiscal 2017 and the next five years thereafter is estimated as follows (in thousands):

2017	$6,581
2018	$8,277
2019	$7,607
2020	$7,094
2021	$6,493
2022	$6,082