Segment Reporting (Tables)

6 Months Ended

Jun. 30, 2013

Segment Reporting [Abstract]

Operating Results and Reconciliation of Segment Profit to Loss from Operations

Operating results for each segment and a reconciliation of segment profit to loss from operations are as follows (in thousands):

	Three Months Ended June  30,						Six Months Ended June 30,
	2013			2012			2013			2012
Product revenue:
Instruments	$	2,320		$	2,579		$	3,959		$	4,079
Consumables		4,305			3,054			8,004			5,757
Service revenue		390			310			728			609
Total life sciences segment		7,015			5,943			12,691			10,445
Diagnostics segment
Instruments		203			—			203			—
Total diagnostics segment		203			—			203			—
Total revenue		7,218			5,943			12,894			10,445
Selling, general, and administrative expenses:
Life sciences segment		2,642			1,759			4,845			3,274
Diagnostics segment		1,240			176			2,680			517
Life sciences segment profit		4,373			4,184			7,846			7,171
Diagnostics segment loss		(1,037	)		(176	)		(2,477	)		(517	)
Total segment profit		3,336			4,008			5,369			6,654
Adjustments:
Cost of revenue		(3,522	)		(3,334	)		(6,404	)		(5,990	)
Research and development expenses		(3,626	)		(2,971	)		(6,685	)		(5,168	)
Unallocated selling, general and administrative expenses		(2,826	)		(1,316	)		(5,309	)		(2,627	)
Loss from operations	$	(6,638	)	$	(3,613	)	$	(13,029	)	$	(7,131	)

Classification of Revenue by Geography

The following table is based on the geographic location of distributors or end users who purchased products and services. For sales to distributors, their geographic location may be different from the geographic locations of the ultimate end user. Revenue by geography was as follows (in thousands):

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2013		2012		2013		2012
North America	$	5,218	$	3,898	$	9,695	$	7,060
Europe & Middle East		1,494		1,006		2,110		1,998
Asia Pacific		506		1,039		1,089		1,387
Total revenue	$	7,218	$	5,943	$	12,894	$	10,445