Goodwill and Intangible Assets (Tables)

3 Months Ended

Apr. 01, 2016

The following table summarizes changes in goodwill during the three months ended April 1, 2016 (in thousands):

Balance at beginning of the period	$	103,456
Net working capital adjustment of Lincoln Laser acquisition		(43	)
Balance at end of the period	$	103,413

Goodwill by reportable segment as of April 1, 2016 was as follows (in thousands):

	Reportable Segment
	Laser Products			Vision Technologies			Precision Motion			Total
Goodwill	$	136,278		$	84,401		$	33,963		$	254,642
Accumulated impairment of goodwill		(102,461	)		(31,722	)		(17,046	)		(151,229	)
Total	$	33,817		$	52,679		$	16,917		$	103,413

Goodwill by reportable segment as of December 31, 2015 was as follows (in thousands):

	Reportable Segment
	Laser Products			Vision Technologies			Precision Motion			Total
Goodwill	$	136,321		$	84,401		$	33,963		$	254,685
Accumulated impairment of goodwill		(102,461	)		(31,722	)		(17,046	)		(151,229	)
Total	$	33,860		$	52,679		$	16,917		$	103,456

Intangible assets as of April 1, 2016 and December 31, 2015, respectively, are summarized as follows (in thousands):

	April 1, 2016							December 31, 2015
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Amortizable intangible assets:
Patents and acquired technologies	$	80,977	$	(65,636	)	$	15,341	$	82,821	$	(66,297	)	$	16,524
Customer relationships		67,102		(38,411	)		28,691		67,168		(36,914	)		30,254
Customer backlog		2,644		(2,602	)		42		2,644		(2,589	)		55
Non-compete covenant		2,514		(1,016	)		1,498		2,514		(882	)		1,632
Trademarks and trade names		10,667		(6,298	)		4,369		10,711		(5,934	)		4,777
Amortizable intangible assets		163,904		(113,963	)		49,941		165,858		(112,616	)		53,242
Non-amortizable intangible assets:
Trade names		13,027		—			13,027		13,027		—			13,027
Totals	$	176,931	$	(113,963	)	$	62,968	$	178,885	$	(112,616	)	$	66,269

Amortization expense is as follows (in thousands):

	Three Months Ended
	April 1, 2016		April 3, 2015
Amortization expense – cost of revenue	$	1,184	$	1,119
Amortization expense – operating expenses		2,108		1,889
Total amortization expense	$	3,292	$	3,008

Estimated amortization expense for each of the five succeeding years and thereafter as of April 1, 2016 was as follows (in thousands):