Segment Reporting (Tables)

9 Months Ended

Sep. 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 September 30,						Nine Months Ended September 30,
	2013			2012			2013			2012
Product revenue:
Instruments	$	3,267		$	2,183		$	7,226		$	6,262
Consumables		4,376			3,568			12,380			9,325
Service revenue		420			284			1,148			893
Total life sciences segment		8,063			6,035			20,754			16,480
Diagnostics segment
Instruments		285			—			488			—
Consumables		41			—			41			—
Total diagnostics segment		326			—			529			—
Total revenue		8,389			6,035			21,283			16,480
Selling, general, and administrative expenses:
Life sciences segment		3,024			1,900			7,869			5,174
Diagnostics segment		1,313			969			3,993			1,486
Life sciences segment profit		5,039			4,135			12,885			11,306
Diagnostics segment loss		(987	)		(969	)		(3,464	)		(1,486	)
Total segment profit		4,052			3,166			9,421			9,820
Adjustments:
Cost of revenue		(3,784	)		(3,086	)		(10,188	)		(9,076	)
Research and development expenses		(3,784	)		(3,085	)		(10,469	)		(8,253	)
Unallocated selling, general and administrative expenses		(3,651	)		(1,301	)		(8,960	)		(3,928	)
Loss from operations	$	(7,167	)	$	(4,306	)	$	(20,196	)	$	(11,437	)

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				Nine Months Ended
	September 30,				September 30,
	2013		2012		2013		2012
North America	$	5,333	$	4,749	$	15,028	$	11,809
Europe & Middle East		1,592		865		3,702		2,863
Asia Pacific		1,464		421		2,553		1,808
Total revenue	$	8,389	$	6,035	$	21,283	$	16,480