Segment Information (Tables)

12 Months Ended

Dec. 31, 2019

Segment Reporting [Abstract]

Revenue, Gross Profit, Operating Income (Loss), Depreciation and Amortization Expenses, Accounts Receivable and Inventory by Reportable Segments

Revenue, gross profit, operating income (loss), depreciation and amortization expenses, accounts receivable and inventories by reportable segments were as follows (in thousands):

	Year Ended December 31,
	2019		2018		2017
Revenue
Photonics	$	230,457	$	249,339	$	232,359
Vision		271,407		232,902		183,074
Precision Motion		124,235		132,096		105,857
Total	$	626,099	$	614,337	$	521,290

	Year Ended December 31,
	2019			2018			2017
Gross Profit
Photonics	$	105,845		$	117,109		$	106,117
Vision		105,228			87,198			69,249
Precision Motion		53,326			59,477			46,564
Unallocated Corporate and Shared Services		(2,314	)		(2,256	)		(1,399	)
Total	$	262,085		$	261,528		$	220,531

	Year Ended December 31,
	2019			2018			2017
Operating Income (Loss)
Photonics	$	41,990		$	59,285		$	51,660
Vision		21,007			8,991			7,883
Precision Motion		22,339			31,674			27,146
Unallocated Corporate and Shared Services		(30,054	)		(28,937	)		(29,123	)
Total	$	55,282		$	71,013		$	57,566

	Year Ended December 31,
	2019		2018		2017
Depreciation and Amortization Expenses
Photonics	$	12,139	$	12,042	$	13,806
Vision		21,161		20,657		13,590
Precision Motion		4,712		3,627		2,308
Unallocated Corporate and Shared Services		268		726		1,054
Total	$	38,280	$	37,052	$	30,758

	December 31,
	2019		2018
Accounts Receivable
Photonics	$	31,046	$	31,536
Vision		43,941		34,414
Precision Motion		16,091		18,005
Total accounts receivable	$	91,078	$	83,955
Inventories
Photonics	$	45,227	$	41,623
Vision		50,074		42,498
Precision Motion		21,317		20,643
Total inventories	$	116,618	$	104,764
Total segment assets	$	207,696	$	188,719

	December 31,
	2019		2018
Total Assets
Total segment assets	$	207,696	$	188,719
Cash and cash equivalents		78,944		82,043
Prepaid income taxes and income taxes receivable		5,905		1,852
Prepaid expenses and other current assets		11,967		9,155
Property, plant and equipment, net		77,556		65,464
Operating lease assets		35,180		—
Deferred tax assets		8,890		9,492
Other assets		2,713		2,269
Intangible assets, net		166,175		142,920
Goodwill		274,710		217,662
Total	$	869,736	$	719,576

Schedule of Geographic Revenue

The Company aggregates geographic revenue based on the customer location where products are shipped. Revenue from these customers is summarized as follows (in thousands, except percentage data):

	Year Ended December 31,
	2019					2018					2017
	Revenue		% of Total			Revenue		% of Total			Revenue		% of Total
United States	$	254,279		40.6	%	$	242,243		39.4	%	$	220,583		42.3	%
Germany		82,032		13.1			88,027		14.3			68,003		13.0
Rest of Europe		129,643		20.7			105,608		17.2			81,001		15.5
China		59,512		9.5			66,414		10.8			56,128		10.8
Rest of Asia-Pacific		89,588		14.3			104,300		17.0			84,727		16.3
Other		11,045		1.8			7,745		1.3			10,848		2.1
Total	$	626,099		100.0	%	$	614,337		100.0	%	$	521,290		100.0	%

Summary of Long-lived Assets

Long-lived assets consist of property, plant and equipment, net, and are aggregated based on the location of the assets. A summary of these long-lived assets is as follows (in thousands):

	December 31,
	2019		2018
United States	$	28,750	$	32,029
Germany		32,376		17,777
Rest of Europe		14,303		13,919
China		2,029		1,636
Rest of Asia-Pacific		98		103
Total	$	77,556	$	65,464

Revenue By End Market

The Company primarily operates in two end markets: the medical market and the advanced industrial market. Revenue by end market was approximately as follows:

	Year Ended December 31,
	2019			2018			2017
Medical		55	%		50	%		50	%
Advanced Industrial		45	%		50	%		50	%
Total		100	%		100	%		100	%