Other current assets (Tables)

9 Months Ended

Sep. 30, 2017

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

Schedule of other current assets

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

	September 30,		December 31,
	2017		2016
Prepaid expenses	$	3,511	$	1,879
Deposits and other receivables	771		759
Interest receivable	157		183
	$	4,439	$	2,821