Statement of Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Additional Paid In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]	Noncontrolling Interest [Member]
Balance at Dec. 29, 2012	$ 343,535	$ 183,027	$ 16,855	$ 124,732	$ 1,537	$ 17,384
Balance, shares at Dec. 29, 2012		66,007
Employee Stock Purchase Plan, Value	549	$ 549	0	0	0	0
Employee Stock Purchase Plan, Shares		80
Exercise of options	2,013	$ 2,800	(787)	0	0	0
Exercise of options, shares		441
Stock based compensation	3,255	$ 0	3,255	0	0	0
Earnings (loss) from continuing operations	(8,583)	0	0	(8,396)	0	(187)
Earnings (loss) from discontinued operations	(431)	0	0	(128)	0	(303)
Currency translation adjustment	2,209	0	0	0	1,817	392
Change in fair value of interest rate swap, net of income taxes	65	0	0	0	43	22
Payment to non-controlling interest	0	0	0	0	0	0
Balance at Dec. 28, 2013	342,612	$ 186,376	19,323	116,208	3,397	17,308
Balance, shares at Dec. 28, 2013		66,528
Employee Stock Purchase Plan, Value	627	$ 627	0	0	0	0
Employee Stock Purchase Plan, Shares		52
Exercise of options	2,431	$ 3,665	(1,234)	0	0	0
Exercise of options, shares		494
Stock based compensation	4,401	$ 0	4,401	0	0	0
Earnings (loss) from continuing operations	19,490	0	0	19,295	0	195
Earnings (loss) from discontinued operations	(11,105)	0	0	(6,194)	0	(4,911)
Currency translation adjustment	(5,148)	0	0	0	(5,188)	40
Change in fair value of interest rate swap, net of income taxes	20	0	0	0	13	7
Payment to non-controlling interest	0	0	0	0	0	0
Balance at Jan. 03, 2015	353,328	$ 190,668	22,490	129,309	(1,778)	12,639
Balance, shares at Jan. 03, 2015		67,074
Stock Issued During Period Value New Issues	95,654	$ 95,654	0	0	0	0
Stock Issued During Period Shares New Issues		16,670
Employee Stock Purchase Plan, Value	590	$ 590	0	0	0	0
Employee Stock Purchase Plan, Shares		55
Exercise of options	3,294	$ 5,033	(1,739)	0	0	0
Exercise of options, shares		769
Exercise Of Warrants, Value	3,879	$ 6,042	(2,163)	0	0	0
Exercise Of Warrants, Shares		850
Stock based compensation	4,757	$ 0	4,757	0	0	0
Earnings (loss) from continuing operations	(3,132)	0	0	(2,996)	0	(136)
Earnings (loss) from discontinued operations	(28,294)	0	0	(19,475)	0	(8,819)
Currency translation adjustment	(5,155)	0	0	0	(4,474)	(681)
Change in fair value of interest rate swap, net of income taxes	210	0	0	0	139	71
Noncontrolling Interest Increase From Business Combination	1,781	0	0	0	0	1,781
Minority Interest Decrease From Redemptions	(733)	0	(1,018)	0	0	285
Balance at Jan. 02, 2016	$ 426,179	$ 297,987	$ 22,327	$ 106,838	$ (6,113)	$ 5,140
Balance, shares at Jan. 02, 2016		85,418