Identified Intangible Assets and Goodwill, Net (Tables)

3 Months Ended

Mar. 30, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of identified intangible assets and goodwill, net [Table Text Block]

The carrying amounts of the identified intangible assets and goodwill acquired were as follows:

	March 30, 2019				December 31, 2018
Identified Intangible Assets and Goodwill, Net	Carrying Amount		Accumulated Amortization		Carrying Amount		Accumulated Amortization
Amortized intangible assets:
Customer lists/relationships	$	26,652	$	18,650	$	25,179	$	18,251
Employment-related	8,160		7,047		8,133		6,954
Tradenames	7,106		5,520		6,858		5,435
Amortized intangible assets	41,918		$	31,217	40,170		$	30,640
Less accumulated amortization	31,217				30,640
Identified intangible assets, net	10,701				9,530
Goodwill	39,328				37,971
	$	50,029			$	47,501

Schedule of Goodwill [Table Text Block]

The changes in the carrying amounts of goodwill, by segment, for the three months endedMarch 30, 2019 and March 31, 2018 follow:

	Balance at January 1, 2019		Acquisitions		Translation and Other Adjustments			Balance at March 30, 2019
Utility	$	4,911	$	—	$	—		$	4,911
Residential and Commercial	33,060		1,232		125			34,417
Total	$	37,971	$	1,232	$	125		$	39,328
	Balance at January 1, 2018		Acquisitions		Translation and Other Adjustments			Balance at March 31, 2018
Utility	$	3,424	$	—	$	—		$	3,424
Residential and Commercial	32,053		—		(314		)	31,739
Total	$	35,477	$	—	$	(314	)	$	35,163

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

The estimated future aggregate amortization expense of intangible assets, as of March 30, 2019 is as follows:

	Estimated Future Amortization Expense
Year ending December 31, 2019	$	1,731
2020	2,281
2021	1,840
2022	1,609
2023	1,479
Thereafter	1,761
	$	10,701