Other Financial Information (Tables)

6 Months Ended

Jun. 30, 2014

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Summary of Inventory

Inventory is comprised of the following (in thousands):

	June 30, 2014		December 31, 2013
Raw materials	$	160	$	209
Work in process	116		127
Finished goods	101		—
Inventory, net	$	377	$	336

Summary of Accrued Expenses

Accrued expenses are comprised of the following (in thousands):

	June 30, 2014		December 31, 2013
Professional fees	$	692	$	997
Outside research and development services	474		298
Deferred compensation	175		184
Environmental remediation services	146		168
Other	320		472
	$	1,807	$	2,119