INVENTORIES

At June 30, 2015 and December 31, 2014, inventories, net consisted of the following (in thousands):



	June 30, 2015		December 31, 2014
Raw materials	$	11,299	$	11,461
Work-in-process	18,736		18,147
Finished goods	28,844		27,024
Total	$	58,879	$	56,632

Short-term portion	$	54,030	$	50,676
Long-term portion	$	4,849	$	5,956

During the six months ended June 30, 2014, amortization expense was approximately $4.7 million related to the fair value step-up of inventory acquired from eBioscience. The inventory fair value step-up was fully amortized as of June 30, 2014.