Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Oct. 01, 2016	Oct. 03, 2015	Oct. 01, 2016	Oct. 03, 2015	Jan. 02, 2016
Operating Activities
Earnings (loss)	$ (3,858)	$ 420	$ (17,708)	$ 7,681
Earnings (loss) from discontinued operations	0	508	(570)	(2,959)
Earnings (loss) from continuing operations	(3,858)	(88)	(17,138)	10,640
Items not affecting cash
Depreciation and amortization	8,646	4,414	25,955	12,739
Amortization of Debt Issuance Costs	3,988	124	10,210	327
Acquisition accounting adjustment on inventory sold	1,890	0	13,404	0
Deferred income taxes	(5,252)	835	(19,760)	697
Stock-based compensation	1,181	1,804	3,173	3,832
Unrealized Gain (Loss) on Derivatives Instrument	(749)	(1,088)	(1,264)	(534)
Fair Value of Contingent Consideration	124	235	(1,281)	317
Impairment of long-lived assets	10,300	0	12,035	0
Other	(64)	(581)	343	1,237
Changes in non-cash working capital, net of business acquired	836	12,648	(60,943)	(28,965)
Net cash flows from operations - continuing operations	17,042	18,303	(35,266)	290
Net cash flows from operations - discontinued operations	0	4,241	758	5,490
Net Cash Provided by (Used in) Operating Activities, Total	17,042	22,544	(34,508)	5,780
Investing activities
Acquisition of businesses, net of cash acquired	0	(6,475)	0	(19,775)
Purchases of property, plant and equipment	(5,463)	(6,866)	(14,803)	(21,841)
Payment of contingent consideration	0	0	(4,554)	0
Proceeds from sale of assets	0	348	0	1,292
Other	0	147	700	(778)
Net cash flows from investing activities - continuing operations	(5,463)	(12,846)	(18,657)	(41,102)
Net cash flows from investing activities - discontinued operations	0	(785)	1,754	(1,224)
Net cash flows from investing activities	(5,463)	(13,631)	(16,903)	(42,326)
Financing activities
Increase (decrease) under line of credit facilities	(13,097)	(3,206)	258,475	31,291
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	(520)	(311)	(11,529)	(722)
Financing costs	(1,179)	(2,157)	(5,545)	(2,188)
Proceeds from issuance of common shares	0	95,344	0	95,344
Proceeds From Stock Options Exercised	227	439	914	3,478
Proceeds From Warrant Exercises	0	0	0	3,879
Other	8	(179)	(126)	(459)
Net cash flows from financing activities - continuing operations	(14,561)	89,930	49,944	130,623
Cash Provided By Used In Financing Activities Discontinued Operations	0	(4,199)	(1,180)	(5,012)
Net Cash Provided By (Used In) Financing Activities	(14,561)	85,731	48,764	125,611
Foreign exchange gain (loss) on cash held in a foreign currency	329	(41)	305	(14)
Increase (decrease) in cash and cash equivalents during the period	(2,653)	94,603	(2,342)	89,051
Discontinued operations cash activity included above:
Add: Balance included at beginning of period	0	2,232	1,707	2,170	$ 2,170
Less: Balance included at end of period	0	(1,626)	0	(1,626)	1,707
Cash and cash equivalents - beginning of the period	4,292	2,154	2,274	7,768	7,768
Cash and cash equivalents - end of the period	1,639	97,363	1,639	97,363	$ 2,274
Noncash Investing And Financing Items [Abstract]
Business Combination Working Capital Adjustment	0	(55)	0	264
Acquisition of business, settlement of pre-existing relationship	0	0	0	(749)
Acquistion of business, contingent consideration at fair value	0	(2,330)	0	(20,330)
Proceeds of divestiture of business, note receivable	$ 0	$ 0	$ 1,537	$ 0