BUSINESS COMBINATIONS (Acquisitions) (Details)				3 Months Ended		9 Months Ended
	Jul. 28, 2017 USD ($)	Mar. 04, 2016 USD ($) shares	Feb. 26, 2016 USD ($)	Sep. 29, 2017 USD ($) installment	Sep. 30, 2016 USD ($)	Sep. 29, 2017 USD ($) installment	Sep. 30, 2016 USD ($)	Dec. 30, 2016 USD ($)
Consideration for acquisitions
Cash paid, net of cash acquired						$ 14,603,000	$ 8,857,000
Other payable for working capital adjustment						1,881,000
Other receivable for working capital adjustment							(604,000)
Allocation of acquired assets
Goodwill				$ 40,056,000		40,056,000		$ 21,947,000
Revenue and Income from operations
Revenues				69,007,000	$ 58,660,000	209,191,000	151,516,000
Operating Income (Loss)				$ 4,183,000	3,053,000	$ 10,710,000	8,855,000
Genesys
Consideration for acquisitions
Cash paid, net of cash acquired		$ 8,857,000
Other receivable for working capital adjustment		(604,000)
Issuance of common stock		2,228,000
Issuance of notes payable		4,569,000
Deferred purchase price, payable in 24 monthly installments		4,569,000
Total consideration		$ 15,050,000	$ 15,100,000
Number of monthly installment payments | installment				24		24
Common stock shares issued | shares		255,808
Tax deductible goodwill		$ 6,200,000
Allocation of acquired assets
Current assets		14,952,000
Non-current assets		36,000
Cash		101,000
Property, plant and equipment		117,000
Liabilities		(12,643,000)
Goodwill		6,167,000
Net assets acquired		15,050,000
Revenue and Income from operations
Revenues				$ 14,900,000		$ 53,000,000
Operating Income (Loss)				100,000		1,500,000
Acquisition costs				0		0
Genesys | Customer relationships
Allocation of acquired assets
Intangible assets		3,260,000
Genesys | Backlog
Allocation of acquired assets
Intangible assets		1,050,000
Genesys | Tradename
Allocation of acquired assets
Intangible assets		1,690,000
Genesys | Non-compete agreements
Allocation of acquired assets
Intangible assets		$ 320,000
Integral Analytics, Inc
BUSINESS COMBINATIONS
Contingent consideration	$ 5,400,000
Consideration for acquisitions
Cash paid, net of cash acquired	15,000,000
Other payable for working capital adjustment	1,881,000
Issuance of common stock	3,099,000
Contingent consideration	5,400,000
Tax deductible goodwill	18,300,000
Allocation of acquired assets
Current assets	711,000
Non-current assets	2,000
Cash	397,000
Property, plant and equipment	5,000
Liabilities	(946,000)
Goodwill	18,251,000
Net assets acquired	25,380,000
Unaudited pro forma financial information
Pro forma revenue				69,149,000	59,869,000	211,279,000	163,290,000
Pro forma income from operations				3,916,000	2,511,000	8,787,000	8,158,000
Pro forma net income				2,705,000	$ 2,054,000	$ 6,913,000	$ 6,186,000
Revenue and Income from operations
Revenues				500,000
Operating Income (Loss)				(400,000)
Integral Analytics, Inc | General and administrative expenses
Revenue and Income from operations
Acquisition costs				$ 194,000
Integral Analytics, Inc | Customer relationships
Allocation of acquired assets
Intangible assets	1,510,000
Integral Analytics, Inc | Tradename
Allocation of acquired assets
Intangible assets	1,040,000
Integral Analytics, Inc | Developed Technology
Allocation of acquired assets
Intangible assets	2,760,000
Integral Analytics, Inc | In-process Technology
Allocation of acquired assets
Intangible assets	$ 1,650,000