INTANGIBLE ASSETS AND GOODWILL (Tables)

6 Months Ended

Jun. 30, 2013

INTANGIBLE ASSETS AND GOODWILL [Abstract]

Summary of intangibles acquired

Summary of intangible assets acquired as discussed above:

(In thousands)	June 30, 2013			December 31, 2012
Intangible asset (IP license for PROCYSBI /RP103) related to the Encode merger	$	2,620		$	2,620
Intangible assets (out-license) related to the 2009 Merger		240			240
Intangible assets (UCSD license FDA approval milestone)		750			0
Total intangible assets		3,610			2,860
Less accumulated amortization		(790	)		(704	)
Intangible assets, net	$	2,820		$	2,156

Actual and estimated amortization expense for intangible assets

The following table summarizes the actual and estimated amortization expense for intangible assets for the periods indicated:

Amortization period (In thousands)	Amortization expense
Year ending December 31, 2013 – estimate	$	187
Year ending December 31, 2014 – estimate		201
Year ending December 31, 2015 – estimate		201
Year ending December 31, 2016 – estimate		201
Year ending December 31, 2017 – estimate		201