Segment Information (Tables)

9 Months Ended

Sep. 30, 2016

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				Nine Months Ended
	September 30, 2016		October 2, 2015		September 30, 2016		October 2, 2015
Revenue
Photonics	$	43,425	$	41,330	$	129,907	$	128,475
Vision		31,601		30,992		88,768		93,319
Precision Motion		22,803		19,949		67,204		61,585
Total	$	97,829	$	92,271	$	285,879	$	283,379

	Three Months Ended						Nine Months Ended
	September 30, 2016			October 2, 2015			September 30, 2016			October 2, 2015
Gross Profit
Photonics	$	18,603		$	18,851		$	57,461		$	57,176
Vision		12,343			12,152			32,446			36,823
Precision Motion		10,592			9,233			30,757			28,309
Unallocated Corporate and Shared Services		(326	)		(326	)		(1,064	)		(1,047	)
Total	$	41,212		$	39,910		$	119,600		$	121,261

	Three Months Ended						Nine Months Ended
	September 30, 2016			October 2, 2015			September 30, 2016			October 2, 2015
Gross Profit Margin
Photonics		42.8	%		45.6	%		44.2	%		44.5	%
Vision		39.1	%		39.2	%		36.6	%		39.5	%
Precision Motion		46.5	%		46.3	%		45.8	%		46.0	%
Total		42.1	%		43.3	%		41.8	%		42.8	%

	Three Months Ended						Nine Months Ended
	September 30, 2016			October 2, 2015			September 30, 2016			October 2, 2015
Operating Income (Loss) from Continuing Operations
Photonics	$	8,185		$	10,145		$	24,704		$	28,586
Vision		2,307			(388	)		(4,164	)		(1,056	)
Precision Motion		6,195			4,417			16,608			14,357
Unallocated Corporate and Shared Services		(5,639	)		(5,167	)		(15,915	)		(17,168	)
Total	$	11,048		$	9,007		$	21,233		$	24,719

	Three Months Ended				Nine Months Ended
	September 30, 2016		October 2, 2015		September 30, 2016		October 2, 2015
Depreciation and Amortization
Photonics	$	1,820	$	1,394	$	5,123	$	4,373
Vision		2,460		2,109		7,861		6,449
Precision Motion		603		680		1,845		1,842
Unallocated Corporate and Shared Services		281		520		1,104		1,424
Total	$	5,164	$	4,703	$	15,933	$	14,088