Selected Balance Sheet Detail (Tables)

12 Months Ended

Dec. 31, 2016

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of inventories

Inventories consisted of the following at December 31, 2016 and 2015 (in thousands):

	2016			2015
Raw materials	$	477		$	575
Work in process		5,032			5,028
Finished goods		3,284			3,156
		8,793			8,759
Allowance for excess and obsolescence		(5,377	)		(550	)
Inventories, net	$	3,416		$	8,209

Schedule of property and equipment

Property and equipment consisted of the following at December 31, 2016 and 2015 (in thousands):

	2016			2015
Laboratory equipment	$	2,300		$	3,369
Computer hardware and software		1,220			1,960
Leasehold improvements		288			508
Furniture, fixtures and equipment		45			135
		3,853			5,972
Accumulated depreciation and amortization		(2,364	)		(4,540	)
Property and equipment, net	$	1,489		$	1,432