Goodwill and Other Intangibles (Tables)

12 Months Ended

Dec. 31, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Reconciliation of the change in the carrying value of goodwill

The changes in the net carrying amount of goodwill by reportable segment for the years ended December 31, 2016 and 2015 were as follows (in thousands):

Segment	Balance at January 1, 2016		Adjustments			Additions		Impairments			Balance at December 31, 2016		Accumulated Impairment Losses
Joining Materials	$	16,210	$	(11	)	$	—	$	—		$	16,199	$	—
Tubing	1,895		—			—		—			1,895		—
Building Materials	71,388		—			—		—			71,388		—
Performance Materials	32,336		(174		)	—		(24,254		)	7,908		24,254
Electrical Products	—		—			84,795		—			84,795		—
Total	$	121,829	$	(185	)	$	84,795	$	(24,254	)	$	182,185	$	24,254

Segment	Balance at January 1, 2015		Adjustments			Additions		Impairments		Balance at December 31, 2015		Accumulated Impairment Losses
Joining Materials	$	16,238	$	(28	)	$	—	$	—	$	16,210	$	—
Tubing	1,895		—			—		—		1,895		—
Building Materials	50,120		—			21,268		—		71,388		—
Performance Materials	—		—			32,336				32,336		—
Total	$	68,253	$	(28	)	$	53,604	$	—	$	121,829	$	—

Summary of Other Intangible Assets

Other intangible assets as of December 31, 2016 and 2015 consisted of:

(in thousands)	December 31, 2016							December 31, 2015							Weighted-Average Amortization Life (in Years)
	Cost		Accumulated Amortization			Net		Cost		Accumulated Amortization			Net
Customer relationships	$	121,820	$	(18,554	)	$	103,266	$	35,077	$	(10,702	)	$	24,375	16.2
Trademarks, trade names and brand names	27,439		(4,184		)	23,255		12,739		(2,649		)	10,090		15.4
Developed technology, patents and patent applications	16,527		(3,518		)	13,009		5,591		(2,591		)	3,000		14.8
Non-compete agreements	774		(737		)	37		774		(714		)	60		8.3
Customer order backlog	8,130		(7,529		)	601		—		—			—		0.3
Other	7,391		(2,580		)	4,811		7,331		(1,739		)	5,592		7.6
Total	$	182,081	$	(37,102	)	$	144,979	$	61,512	$	(18,395	)	$	43,117

Summary of Estimated Amortization Expense

The increase in amortization expense during 2016 was principally due to the Company's recent acquisitions. The estimated amortization expense for each of the five succeeding years and thereafter is as follows:

(in thousands)	Customer Relationships		Trademarks, Trade Names and Brand Names		Technology, Patents and Patent Applications		Non-Compete Agreements		Customer Order Backlog		Other		Total
2017	$	13,121	$	1,840	$	911	$	16	$	601	$	842	$	17,331
2018	11,598		1,807		1,082		16		—		730		15,233
2019	10,309		1,641		1,082		5		—		719		13,756
2020	9,193		1,641		1,082		—		—		719		12,635
2021	7,945		1,641		1,082		—		—		719		11,387
Thereafter	51,100		14,685		7,770		—		—		1,082		74,637
Total	$	103,266	$	23,255	$	13,009	$	37	$	601	$	4,811	$	144,979