Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2014

Property, Plant and Equipment [Abstract]

Property and Equipment and Related Accumulated Depreciation

Property and equipment and related accumulated depreciation are as follows ($ in thousands):

	Estimated Useful Life (Years)	December 31,
		2014			2013
Lab equipment	5	$	1,795		$	1,740
Furniture and fixtures	4		107			48
Computer equipment	3		206			206
Software	3		25			25
Leasehold improvements	Lesser of useful life or remaining lease term		100			77
			2,233			2,096
Less accumulated depreciation and amortization			(1,747	)		(1,337	)
Total property and equipment, net		$	486		$	759