Property, plant and equipment (Tables)

12 Months Ended

Dec. 31, 2014

Property, Plant and Equipment [Abstract]

Schedule of property, plant and equipment

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

	2014	2013
Machinery and equipment	$ 1,235	$ 1,231
Office furniture and fixtures	435	435
Leasehold improvements	90	90
Purchased software	323	323
	2,083	2,079
Less accumulated depreciation and amortization	(2,072)	(2,062)
	$ 11	$ 17