Other current assets (Tables)

6 Months Ended

Jun. 30, 2016

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

Schedule of other current 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