Property, plant and equipment (Tables)

12 Months Ended

Dec. 31, 2015

Property, Plant and Equipment [Abstract]

Schedule of property, plant and equipment

Property and equipment, net at December 31, consists of the following:

	2015	2014
Machinery and equipment	$ 1,249	$ 1,235
Office furniture and fixtures	435	435
Leasehold improvements	125	90
Purchased software	323	323
	2,132	2,083
Less accumulated depreciation and amortization	(2,088)	(2,072)
	$ 44	$ 11