Consolidated Statements of Shareholders' Equity - USD ($) $ 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. 28, 2013	$ 342,612	$ 186,376	$ 19,323	$ 116,208	$ 3,397	$ 17,308
Balance, shares at Dec. 28, 2013		66,528,000
Employee Stock Purchase Plan, Value	470	$ 470	0	0	0	0
Employee Stock Purchase Plan, Shares		44,000
Exercise of options	2,526	$ 3,472	(946)	0	0	0
Exercise of options, shares		468,000
Stock based compensation	2,884	$ 0	2,884	0	0	0
Earnings (loss) from continuing operations	15,093	0	0	14,667	0	426
Earnings (loss) from discontinued operations	297	0	0	297	0	0
Currency translation adjustment	(4,126)	0	0	0	(4,065)	(61)
Change in fair value of interest rate swap, net of income taxes	10	0	0	0	7	3
Balance at Oct. 04, 2014	359,766	$ 190,318	21,261	131,172	(661)	17,676
Balance, shares at Oct. 04, 2014		67,040,000
Balance at Jan. 03, 2015	353,328	$ 190,668	22,490	129,309	(1,778)	12,639
Balance, shares at Jan. 03, 2015		67,074,000
Stock Issued During Period Value New Issues	96,544	$ 96,544	0	0	0	0
Stock Issued During Period Shares New Issues		16,670,000
Employee Stock Purchase Plan, Value	451	$ 451	0	0	0	0
Employee Stock Purchase Plan, Shares		36,000
Exercise of options	3,027	$ 4,624	(1,597)	0	0	0
Exercise of options, shares		704,000
Exercise of Warrants, Value	3,879	$ 6,042	(2,163)	0	0	0
Exercise of Warrants, Shares		850,000
Stock based compensation	4,140	$ 0	4,140	0	0	0
Earnings (loss) from continuing operations	6,387	0	0	7,859	0	(1,472)
Earnings (loss) from discontinued operations	(262)	0	0	(262)	0	0
Currency translation adjustment	(3,009)	0	0	0	(2,338)	(671)
Change in fair value of interest rate swap, net of income taxes	210	0	0	0	139	71
Minority Interest Decrease From Redemptions	(733)	0	(1,018)	0	0	285
Balance at Oct. 03, 2015	$ 463,962	$ 298,329	$ 21,852	$ 136,906	$ (3,977)	$ 10,852
Balance, shares at Oct. 03, 2015		85,334,000