Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jul. 02, 2016	Jul. 04, 2015	Jul. 02, 2016	Jul. 04, 2015	Jan. 02, 2016
Operating Activities
Earnings (loss)	$ (4,001)	$ 2,082	$ (13,850)	$ 7,261
Earnings (loss) from discontinued operations	0	(2,747)	(570)	(3,467)
Earnings (loss) from continuing operations	(4,001)	4,829	(13,280)	10,728
Items not affecting cash
Depreciation and amortization	8,549	4,262	17,309	8,325
Amortization of Debt Issuance Costs	2,854	105	6,222	203
Acquisition accounting adjustment on inventory sold	3,888	0	11,514	0
Deferred income taxes	(10,821)	57	(14,508)	(138)
Stock-based compensation	953	1,058	1,992	2,028
Unrealized Gain (Loss) on Derivatives Instrument	(306)	996	(515)	893
Fair Value of Contingent Consideration	(1,603)	82	(1,405)	82
Impairment of long-lived assets	0	0	1,735	0
Other	367	964	407	1,479
Changes in non-cash working capital, net of business acquired	(34,294)	(19,413)	(61,779)	(41,613)
Net cash flows from operations - continuing operations	(34,414)	(7,060)	(52,308)	(18,013)
Net cash flows from operations - discontinued operations	0	1,782	758	1,249
Net Cash Provided by (Used in) Operating Activities, Total	(34,414)	(5,278)	(51,550)	(16,764)
Investing activities
Acquisition of businesses, net of cash acquired	0	(733)	0	(14,033)
Purchases of property, plant and equipment	(4,793)	(9,454)	(9,340)	(14,975)
Acquisition of non-controlling interest	0	0	0	0
Payment of contingent consideration	(4,554)	0	(4,554)	0
Payments For Proceeds From Longterm Investments	700	0	700	0
Proceeds from sale of assets	0	944	0	944
Other	0	(162)	0	(192)
Net cash flows from investing activities - continuing operations	(8,647)	(9,405)	(13,194)	(28,256)
Net cash flows from investing activities - discontinued operations	1,945	(217)	1,754	(439)
Net cash flows from investing activities	(6,702)	(9,622)	(11,440)	(28,695)
Financing activities
Increase (decrease) under line of credit facilities	39,029	13,150	271,572	34,497
Borrowings under long term debt	0	0	432	0
Repayment of line of credit facilities	0	0	(192,677)	0
Repayment of long-term debt	(523)	(168)	(11,009)	(411)
Financing costs	(256)	0	(4,366)	0
Proceeds From Stock Options Exercised	575	1,423	687	3,039
Proceeds From Warrant Exercises	0	3,067	0	3,879
Other	(119)	(174)	(134)	(311)
Net cash flows from financing activities - continuing operations	38,706	17,298	64,505	40,693
Cash Provided By Used In Financing Activities Discontinued Operations	0	(1,551)	(1,180)	(813)
Net Cash Provided By (Used In) Financing Activities	38,706	15,747	63,325	39,880
Foreign exchange gain (loss) on cash held in a foreign currency	(61)	48	(24)	27
Increase (decrease) in cash and cash equivalents during the period	(2,471)	895	311	(5,552)
Discontinued operations cash activity included above:
Add: Balance included at beginning of period	1,288	2,063	1,707	2,170	$ 2,170
Less: Balance included at end of period	0	(2,232)	0	(2,232)	1,707
Cash and cash equivalents - beginning of the period	5,475	1,428	2,274	7,768	7,768
Cash and cash equivalents - end of the period	4,292	2,154	4,292	2,154	$ 2,274
Noncash Investing And Financing Items [Abstract]
Business Combination Working Capital Adjustment	0	0	0	319
Acquisition of business, settlement of pre-existing relationship	0	0	0	(749)
Acquistion of business, contingent consideration at fair value	0	0	0	(18,000)
Proceeds of divestiture of business, note receivable	$ 1,537	$ 0	$ 1,537	$ 0