Statement of Shareholders' Equity - USD ($) shares 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	$ 353,328,000	$ 190,668,000	$ 22,490,000	$ 129,309,000	$ (1,778,000)	$ 12,639,000
Balance, shares at Jan. 03, 2015		67,074
Stock Issued During Period Value New Issues	95,654,000	$ 95,654,000	0	0	0	0
Stock Issued During Period Shares New Issues		16,670
Employee Stock Purchase Plan, Value	590,000	$ 590,000	0	0	0	0
Employee Stock Purchase Plan, Shares		55
Exercise of options	3,294,000	$ 5,033,000	(1,739,000)	0	0	0
Exercise of options, shares		769
Exercise Of Warrants, Value	3,879,000	$ 6,042,000	(2,163,000)	0	0	0
Exercise Of Warrants, Shares		850
Stock based compensation	4,757,000	$ 0	4,757,000	0	0	0
Earnings (loss) from continuing operations	(3,132,000)	0	0	(2,996,000)	0	(136,000)
Earnings (loss) from discontinued operations	(28,294,000)	0	0	(19,475,000)	0	(8,819,000)
Currency translation adjustment	(5,155,000)	0	0	0	(4,474,000)	(681,000)
Change in fair value of interest rate swap, net of income taxes	210,000	0	0	0	139,000	71,000
Noncontrolling Interest Increase From Business Combination	1,781,000	0	0	0	0	1,781,000
Minority Interest Decrease From Redemptions	(733,000)	0	(1,018,000)	0	0	285,000
Balance at Jan. 02, 2016	426,179,000	$ 297,987,000	22,327,000	106,838,000	(6,113,000)	5,140,000
Balance, shares at Jan. 02, 2016		85,418
Employee Stock Purchase Plan, Value	391,000	$ 391,000	0	0	0	0
Employee Stock Purchase Plan, Shares		83
Exercise of options	1,095,000	$ 2,048,000	(953,000)	0	0	0
Exercise of options, shares		243
Dividends Preferred Stock Cash	(1,590,000)	$ 0	0	(1,590,000)	0	0
Preferred Stock Accretion To Redemption Value1	(222,000)	0	0	(222,000)	0	0
Stock based compensation	4,148,000	0	4,148,000	0	0	0
Earnings (loss) from continuing operations	(50,564,000)	0	0	(50,618,000)	0	54,000
Earnings (loss) from discontinued operations	(834,000)	0	0	(570,000)	0	(264,000)
Currency translation adjustment	(2,042,000)	0	0	0	(1,897,000)	(145,000)
Change in Equity Associated with Disposal of Discontinued Operation	(7,148,000)	0	0	0	(5,094,000)	(2,054,000)
Minority Interest Decrease From Redemptions	0
Balance at Dec. 31, 2016	369,413,000	$ 300,426,000	25,522,000	53,838,000	(13,104,000)	2,731,000
Balance, shares at Dec. 31, 2016		85,744
Employee Stock Purchase Plan, Value	409,000	$ 409,000	0	0	0	0
Employee Stock Purchase Plan, Shares		61
Exercise of options	4,625,000	$ 8,064,000	(3,439,000)	0	0	0
Exercise of options, shares		952
Dividends Preferred Stock Cash	(6,800,000)	$ 0	0	(6,800,000)	0	0
Preferred Stock Accretion To Redemption Value1	(1,009,000)	0	0	(1,009,000)	0	0
Stock based compensation	5,709,000	0	5,709,000	0	0	0
Earnings (loss) from continuing operations	(134,568,000)	0	0	(135,320,000)	0	752,000
Currency translation adjustment	6,184,000	0	0	0	6,223,000	(39,000)
Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax	(305,000)	0	0	0	(305,000)	0
Minority Interest Decrease From Redemptions	(1,737,000)	0	214,000	0	(82,000)	(1,869,000)
Balance at Dec. 30, 2017	241,921,000	$ 308,899,000	$ 28,006,000	$ (89,291,000)	$ (7,268,000)	$ 1,575,000
Balance, shares at Dec. 30, 2017		86,757
AOCI Including Portion Attributable To Non controlling Interest Tax	$ 130,000