Inventories (Tables)

3 Months Ended

Mar. 31, 2018

Inventory Disclosure [Abstract]

Schedule of inventories

Inventories consist of the following:

	March 31, 2018			December 31, 2017
Raw materials	$	677		$	543
Finished goods		564			863
		1,241			1,406
Allowance for excess inventory quantities		(21	)		(21	)
	$	1,220		$	1,385