Segment Information (Tables)

3 Months Ended

Mar. 31, 2017

Segment Reporting [Abstract]

Revenue, Gross Profit, Gross Profit Margin, Operating Income (Loss) from Continuing Operations, and Depreciation and Amortization by Reportable Segments

Revenue, gross profit, gross profit margin, operating income (loss) from continuing operations, and depreciation and amortization by reportable segments are as follows (in thousands):

	Three Months Ended
	March 31,		April 1,
	2017		2016
Revenue
Photonics	$	50,736	$	40,358
Vision		32,762		28,862
Precision Motion		25,476		21,096
Total	$	108,974	$	90,316

	Three Months Ended
	March 31,			April 1,
	2017			2016
Gross Profit
Photonics	$	21,789		$	17,997
Vision		13,146			9,579
Precision Motion		11,518			9,668
Unallocated Corporate and Shared Services		(359	)		(352	)
Total	$	46,094		$	36,892

	Three Months Ended
	March 31,			April 1,
	2017			2016
Gross Profit Margin
Photonics		42.9	%		44.6	%
Vision		40.1	%		33.2	%
Precision Motion		45.2	%		45.8	%
Total		42.3	%		40.8	%

	Three Months Ended
	March 31,			April 1,
	2017			2016
Operating Income (Loss) from Continuing Operations
Photonics	$	8,080		$	6,856
Vision		1,525			(3,771	)
Precision Motion		7,164			5,235
Unallocated Corporate and Shared Services		(6,557	)		(5,733	)
Total	$	10,212		$	2,587

	Three Months Ended
	March 31,		April 1,
	2017		2016
Depreciation and Amortization
Photonics	$	3,244	$	1,544
Vision		2,437		3,100
Precision Motion		566		614
Unallocated Corporate and Shared Services		235		573
Total	$	6,482	$	5,831