Consolidated Statements 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 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	96,544	$ 96,544	0	0	0	0
Stock Issued During Period Shares New Issues		16,670
Employee Stock Purchase Plan, Value	451	$ 451	0	0	0	0
Employee Stock Purchase Plan, Shares		36
Exercise of options	3,027	$ 4,624	(1,597)	0	0	0
Exercise of options, shares		704
Exercise of Warrants, Value	3,879	$ 6,042	(2,163)	0	0	0
Exercise of Warrants, Shares		850
Stock based compensation	4,140	$ 0	4,140	0	0	0
Earnings (loss) from continuing operations	10,640	0	0	10,556	0	84
Earnings (loss) from discontinued operations	(4,515)	0	0	(2,959)	0	(1,556)
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
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
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
Employee Stock Purchase Plan, Value	326	$ 326	0	0	0	0
Employee Stock Purchase Plan, Shares		67
Exercise of options	588	$ 1,157	(569)	0	0	0
Exercise of options, shares		169
Stock based compensation	3,173	$ 0	3,173	0	0	0
Earnings (loss) from continuing operations	(17,138)	0	0	(17,142)	0	4
Earnings (loss) from discontinued operations	(834)	0	0	(570)	0	(264)
Currency translation adjustment	282	0	0	0	508	(226)
Change in Equity Associated with Disposal of Discontinued Operation	(7,148)	0	0	0	(5,094)	(2,054)
Balance at Oct. 01, 2016	$ 405,428	$ 299,470	$ 24,931	$ 89,126	$ (10,699)	$ 2,600
Balance, shares at Oct. 01, 2016		85,654