Other Balance Sheet Accounts (Tables)

12 Months Ended

Dec. 31, 2015

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Summary of Property and Equipment

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

	2015			2014
Equipment	$	17,425		$	17,515
Leasehold improvements		8,048			8,048
		25,473			25,563
Less accumulated depreciation and amortization		(23,600	)		(22,924	)
	$	1,873		$	2,639

Summary of Intangible Assets

Intangible assets consisted of the following at December 31 (in thousands):

	2015			2014
Patent application costs		2,252			2,972
Accumulated amortization patent costs		(952	)		(1,312	)
	$	1,300		$	1,660

Summary of Accounts Payable and Accrued Expenses

Accounts payable and accrued expenses consisted of the following at December 31 (in thousands):

	2015		2014
Employee compensation	$	2,220	$	2,471
Clinical trial accruals		102		1,686
Accounts payable		733		227
Deferred rent		496		432
Other accrued liabilities		361		385
	$	3,912	$	5,201