NOTE 5 - SEGMENT INFORMATION (Details) - Schedule of Reconciliation of Operating Profit (Loss) from Segments to Consolidated - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 26, 2015	Sep. 27, 2014	Sep. 26, 2015	Sep. 27, 2014
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	$ 18,210	$ 26,927	$ 62,365	$ 80,994
Gross profit	3,773	6,083	12,504	17,956
SG&A	3,350	4,000	10,909	12,365
Operating income (loss)	423	2,083	1,595	5,591
Other income (expense)			641	118
Interest expense, net	(32)	(37)	(98)	(79)
Tax expense	(67)	(231)	(219)	(412)
Net income	$ 320	$ 1,810	1,919	5,218
Engineering and Construction [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue			38,174	37,742
Gross profit			5,852	6,268
SG&A			2,116	2,883
Operating income (loss)			3,736	3,385
Automation Segment [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue			24,191	43,252
Gross profit			6,652	11,688
SG&A			1,869	2,170
Operating income (loss)			4,783	9,518
Corporate Segment [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue			0	0
Gross profit			0	0
SG&A			6,924	7,312
Operating income (loss)			$ (6,924)	$ (7,312)