Goodwill and Intangible assets, net (Tables)

6 Months Ended

Jun. 30, 2013

Schedule of Intangible Assets

Intangible assets at June 30, 2013 and December 31, 2012 were as follows:

	June 30, 2013							December 31, 2012
	Gross carrying amount		Accumulated amortization			Intangible assets, net		Gross carrying amount		Accumulated amortization			Intangible assets, net
Product licensing rights	$	3,311	$	(1,768	)	$	1,543	$	3,156	$	(1,541	)	$	1,615
Product development rights		1,576		—			1,576		2,662		—			2,662
	$	4,887	$	(1,768	)	$	3,119	$	5,818	$	(1,541	)	$	4,277

Movements in Intangible Assets

Movements in intangible assets were due to the following:

	Product licensing rights			Product development rights
December 31, 2012	$	1,615		$	2,662
Acquisition of product rights		155			661
Amortization of product rights		(227	)		(1,747	)
June 30, 2013	$	1,543		$	1,576

Schedule of Estimate Amortization Expense over Each of the Next Five Years

We currently estimate amortization expense over each of the next five years as follows:

For the year ending:	Amortization expense
June 30, 2014	$	1,983
June 30, 2015		265
June 30, 2016		145
June 30, 2017		99
June 30, 2018		99