Other current assets and other long-term assets

6 Months Ended

Jun. 30, 2016

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Other current assets and other long-term assets

Other current assets and other long-term assets

Other current assets consisted of the following (in thousands):

	June 30,		December 31,
	2016		2015
Prepaid expenses	$	928	$	2,287
Security deposits and other receivables	516		551
Interest receivable	282		237
	$	1,726	$	3,075

The other long-term assets balance consisted of $2.4 million and $2.0 million in deposits paid in conjunction with the Company's research and development activities as of June 30, 2016 and December 31, 2015, respectively.