Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 29, 2019

The following table summarizes changes in goodwill during the three months ended March 29, 2019 (in thousands):

Balance at beginning of the period	$	217,662
Effect of foreign exchange rate changes		(37	)
Balance at end of the period	$	217,625

Goodwill by reportable segment as of March 29, 2019 was as follows (in thousands):

	Reportable Segment
	Photonics			Vision			Precision Motion			Total
Goodwill	$	169,724		$	153,953		$	45,177		$	368,854
Accumulated impairment of goodwill		(102,461	)		(31,722	)		(17,046	)		(151,229	)
Total	$	67,263		$	122,231		$	28,131		$	217,625

Goodwill by reportable segment as of December 31, 2018 was as follows (in thousands):

	Reportable Segment
	Photonics			Vision			Precision Motion			Total
Goodwill	$	168,955		$	155,017		$	44,919		$	368,891
Accumulated impairment of goodwill		(102,461	)		(31,722	)		(17,046	)		(151,229	)
Total	$	66,494		$	123,295		$	27,873		$	217,662

Intangible assets as of March 29, 2019 and December 31, 2018, respectively, are summarized as follows (in thousands):

	March 29, 2019							December 31, 2018
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Amortizable intangible assets:
Patents and developed technologies	$	134,179	$	(89,045	)	$	45,134	$	134,034	$	(86,623	)	$	47,411
Customer relationships		139,157		(67,591	)		71,566		139,097		(64,174	)		74,923
Customer backlog		1,766		(1,606	)		160		1,738		(1,191	)		547
Non-compete covenant		2,514		(2,514	)		—		2,514		(2,493	)		21
Trademarks and trade names		15,965		(9,223	)		6,742		15,915		(8,924	)		6,991
Amortizable intangible assets		293,581		(169,979	)		123,602		293,298		(163,405	)		129,893
Non-amortizable intangible assets:
Trade names		13,027		—			13,027		13,027		—			13,027
Totals	$	306,608	$	(169,979	)	$	136,629	$	306,325	$	(163,405	)	$	142,920

Amortization expense was as follows (in thousands):

	Three Months Ended
	March 29,		March 30,
	2019		2018
Amortization expense – cost of revenue	$	2,311	$	2,480
Amortization expense – operating expenses		3,998		3,698
Total amortization expense	$	6,309	$	6,178

Estimated amortization expense for each of the five succeeding years and thereafter as of March 29, 2019 was as follows (in thousands):