Prepayments and Other Current Assets (Tables)

12 Months Ended

Dec. 31, 2017

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

Components of prepayments and other current assets

The components of prepayments and other current assets were as follows at the dates indicated (in thousands):

	December 31,
	2017		2016
Insurance premiums	$	425	$	1,403
Rents, licenses and other	839		694
Total	$	1,264	$	2,097