Segment Information - Schedule of Segment Information for Operation Statement (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 26, 2015
Operating revenues	$ 59,224	$ 79,605
Operating income (loss)	(3,238)	2,100
Depreciation and amortization	1,143	1,456
Tangible assets	41,520	49,163
Goodwill	2,806	2,806
Other intangible assets	110	231
Total assets	44,436	52,200
Capital expenditures	64	1,005
EPCM [Member]
Operating revenues	33,266	49,277
Operating income (loss)	731	4,219
Depreciation and amortization	28	177
Tangible assets	5,810	12,289
Goodwill	720	720
Other intangible assets
Total assets	6,530	13,009
Capital expenditures	44	16
Automation Segment [Member]
Operating revenues	25,958	30,328
Operating income (loss)	3,281	6,832
Depreciation and amortization	381	614
Tangible assets	8,100	17,253
Goodwill	2,086	2,086
Other intangible assets	110	231
Total assets	10,296	19,570
Capital expenditures	14	189
Corporate [Member]
Operating revenues
Operating income (loss)	(7,250)	(8,951)
Depreciation and amortization	734	665
Tangible assets	27,610	19,621
Goodwill
Other intangible assets
Total assets	27,610	19,621
Capital expenditures	$ 6	$ 800