Property and Equipment

12 Months Ended

Dec. 31, 2016

Property, Plant and Equipment [Abstract]

Property and Equipment

7. Property and Equipment

Property and equipment as of December 31, 2016 and 2015 were as follows:

	Useful Life (Years)	December 31, 2016			December 31, 2015
Manufacturing and clinical equipment	7 - 10	$	617		$	617
Computer, software and other office equipment	5	1,711			944
Furniture and fixtures	7	774			738
Leasehold improvements	3 - 5	1,835			1,551
Construction-in-progress		—			515
		4,937			4,365
Accumulated depreciation		(1,656		)	(899		)
Property and equipment, net		$	3,281		$	3,466

For the years ended December 31, 2016, 2015 and 2014, depreciation expense was $757 thousand, $698 thousand and $127 thousand, respectively.