Revenue from Contracts with Customers (Tables)

3 Months Ended

Mar. 31, 2019

Revenue from Contract with Customer [Abstract]

Summary of Revenue from Contracts with Customers

The following tables summarize sales to external customers by major source.

	Three Months Ended March 31, 2019
	Mobile Solutions		Power Solutions		Life Sciences		Intersegment Sales Eliminations			Total
United States	$	44,457	$	41,115	$	68,343	$	(484	)	$	153,431
China	9,153		1,838		1,692		—			12,683
Mexico	5,378		2,709		127		—			8,214
Brazil	8,382		69		—		—			8,451
Germany	1,406		16		8,885		—			10,307
Switzerland	1,359		16		3,265		—			4,640
Poland	1,913		4		6		—			1,923
Italy	1,856		63		421		—			2,340
Czech Republic	1,509		188		—		—			1,697
France	44		—		1,225		—			1,269
Africa	—		1,156		—		—			1,156
Other	2,618		2,483		2,044		—			7,145
Total net sales	$	78,075	$	49,657	$	86,008	$	(484	)	$	213,256

	Three Months Ended March 31, 2018
	Mobile Solutions		Power Solutions		Life Sciences		Intersegment Sales Eliminations			Total
United States	$	49,655	$	40,128	$	30,553	$	(528	)	$	119,808
China	11,581		1,485		126		—			13,192
Mexico	7,236		3,197		172		—			10,605
Brazil	9,885		50		—		—			9,935
Poland	2,052		14		—		—			2,066
Czech Republic	1,810		—		—		—			1,810
Italy	1,577		98		—		—			1,675
Germany	1,534		7		1		—			1,542
Switzerland	1,406		—		—		—			1,406
Netherlands	—		974		—		—			974
Other	3,058		2,729		348		—			6,135
Total net sales	$	89,794	$	48,682	$	31,200	$	(528	)	$	169,148

Summary of Contract Liabilities from Contracts with Customers

The following table provides information about contract liabilities from contracts with customers.

	Deferred Revenue
Balance at January 1, 2019	$	2,974
Balance at March 31, 2019	$	2,890