DEBT AND LINES OF CREDIT (Details)	3 Months Ended	12 Months Ended			0 Months Ended	1 Months Ended							3 Months Ended									0 Months Ended		1 Months Ended			3 Months Ended		12 Months Ended							12 Months Ended	0 Months Ended			1 Months Ended	3 Months Ended								0 Months Ended	1 Months Ended	12 Months Ended		12 Months Ended
	Dec. 31, 2011 USD ($)	Dec. 29, 2012 USD ($)	Dec. 31, 2011 USD ($)	Oct. 31, 2011 NewCo Gores	Jul. 12, 2012 5.0% Euro Notes, due July 2013 EUR (€)	Jul. 31, 2012 5.0% Euro Notes, due July 2013 EUR (€)	Jun. 30, 2012 5.0% Euro Notes, due July 2013 EUR (€)	Mar. 31, 2012 5.0% Euro Notes, due July 2013 EUR (€)	Dec. 31, 2011 5.0% Euro Notes, due July 2013 EUR (€)	Apr. 30, 2011 5.0% Euro Notes, due July 2013 EUR (€)	Jul. 31, 2006 5.0% Euro Notes, due July 2013 USD ($)	Jul. 31, 2006 5.0% Euro Notes, due July 2013 EUR (€)	Sep. 29, 2012 5.0% Euro Notes, due July 2013 USD ($)	Jun. 30, 2012 5.0% Euro Notes, due July 2013 USD ($)	Mar. 31, 2012 5.0% Euro Notes, due July 2013 USD ($)	Dec. 31, 2011 5.0% Euro Notes, due July 2013 USD ($)	Jul. 02, 2011 5.0% Euro Notes, due July 2013 USD ($)	Dec. 29, 2012 5.0% Euro Notes, due July 2013	Jun. 06, 2012 5.0% Euro Notes, due July 2013 EUR (€)	Dec. 15, 2011 5.0% Euro Notes, due July 2013 EUR (€)	Apr. 08, 2011 5.0% Euro Notes, due July 2013 EUR (€)	Dec. 21, 2012 6.0% Convertible Senior Notes, due June 2014 USD ($)	Nov. 30, 2012 6.0% Convertible Senior Notes, due June 2014 USD ($)	Jun. 30, 2012 6.0% Convertible Senior Notes, due June 2014 USD ($)	Apr. 30, 2012 6.0% Convertible Senior Notes, due June 2014 USD ($)	Dec. 31, 2011 6.0% Convertible Senior Notes, due June 2014 USD ($)	Jun. 30, 2012 6.0% Convertible Senior Notes, due June 2014 USD ($)	Mar. 31, 2012 6.0% Convertible Senior Notes, due June 2014 USD ($)	Dec. 29, 2012 6.0% Convertible Senior Notes, due June 2014 USD ($)	Dec. 31, 2011 6.0% Convertible Senior Notes, due June 2014 USD ($)	Jan. 01, 2011 6.0% Convertible Senior Notes, due June 2014 USD ($)	Jun. 25, 2012 6.0% Convertible Senior Notes, due June 2014 USD ($)	Apr. 03, 2012 6.0% Convertible Senior Notes, due June 2014 USD ($)	Dec. 21, 2011 6.0% Convertible Senior Notes, due June 2014 USD ($)	Jun. 24, 2009 6.0% Convertible Senior Notes, due June 2014 USD ($)	Dec. 29, 2012 6.0% Convertible Senior Notes, due June 2014 Minimum USD ($)	Jan. 14, 2013 10.5% Senior Secured Notes, due April 2019	Jul. 12, 2012 10.5% Senior Secured Notes, due April 2019 USD ($)	Apr. 07, 2011 10.5% Senior Secured Notes, due April 2019 USD ($)	Jun. 30, 2012 10.5% Senior Secured Notes, due April 2019 USD ($)	Jan. 14, 2013 10.5% Senior Secured Notes, due April 2019	Jan. 04, 2013 10.5% Senior Secured Notes, due April 2019	Oct. 06, 2012 10.5% Senior Secured Notes, due April 2019	Jul. 08, 2012 10.5% Senior Secured Notes, due April 2019	Dec. 29, 2012 10.5% Senior Secured Notes, due April 2019 USD ($)	Jul. 12, 2012 10.5% Senior Secured Notes, due April 2019 EUR (€)	Jun. 08, 2012 10.5% Senior Secured Notes, due April 2019	Dec. 31, 2011 10.5% Senior Secured Notes, due April 2019 USD ($)	Jan. 06, 2013 10.5% Senior Secured Notes, due April 2019 Maximum	May 31, 2010 Revolving credit facility USD ($) item	Dec. 29, 2012 Revolving credit facility USD ($)	Dec. 29, 2012 Revolving credit facility Minimum USD ($)	Dec. 29, 2012 Revolving credit facility Maximum USD ($)	May 31, 2010 Letters of credit USD ($)	May 31, 2010 Standby letters of credit USD ($)	May 31, 2010 Multi-currency revolving credit line USD ($)	May 31, 2010 US Dollar credit line USD ($)	Dec. 29, 2012 Capital lease obligations USD ($)	Dec. 31, 2011 Capital lease obligations USD ($)
DEBT AND LINES OF CREDIT
Interest rate (as a percent)																		5.00%											6.00%										10.50%						10.50%
Total debt	$ 446,315,000	$ 406,294,000	$ 446,315,000													$ 157,139,000										$ 60,270,000			$ 18,287,000	$ 60,270,000															$ 383,662,000			$ 220,085,000										$ 4,345,000	$ 8,821,000
Less: Short-term borrowings	4,476,000	4,345,000	4,476,000
Convertible Senior Notes	60,270,000	18,287,000	60,270,000
Long-term debt	381,569,000	383,662,000	381,569,000
Notes repurchased					52,900,000
Principal amount of debt																										69,200,000			19,900,000	69,200,000					90,000,000				220,000,000							52,900,000
Unamortized debt discount																										8,900,000			1,600,000	8,900,000
Issuance of notes											446,900,000	350,000,000																												152,000,000
Ownership interest of third party in cost method investment (as a percent)				81.25%
Repurchase of aggregate principal amount of debt								40,000,000											28,600,000	100,000,000	128,500,000
Optional redemption amount		158,027,000	309,159,000			55,400,000	29,600,000	40,600,000	100,500,000	123,100,000
Pretax gain (loss) on extinguishment of debt	(500,000)	(9,754,000)	5,157,000										(3,000,000)	(1,300,000)	(800,000)	(800,000)	6,500,000					(400,000)	(700,000)				(1,400,000)	(2,100,000)
Outstanding borrowings under amended and restated revolving credit facility																																			86,600,000
Debt instrument, conversion ratio																													279.6421
Initial conversion price per share of common stock (in dollars per share)																													$ 3.576
Number of days within 30 consecutive trading days in which the closing price of the entity's common stock must exceed the conversion price for the notes to be redeemable																													20 days
Number of consecutive trading days ending on the last trading day of the previous fiscal quarter during which the closing price of the entity's common stock must exceed the conversion price for at least 20 days in order for the notes to be redeemable																													30 days
Convertibility of debt, sale price of closing stock (in dollars per share)																																				$ 4.2912
Convertibility of debt, closing price of stock test, percentage of stock price to conversion price that must be exceeded																																				120.00%
Number of consecutive business days immediately after any 10 consecutive trading day period																													5 days
Number of consecutive trading days before five consecutive business days during the note measurement period																													10 days
Principal amount of notes used for debt instrument conversion ratio																													1,000
Convertibility of debt, trading price of debt test, percentage of closing price of stock used in calculation																													98.00%
Trading days immediately prior to maturity date and on or after March 15, 2014 for which holders may convert at any time regardless of convertible debt clauses																													3 days
Principal amount of convertible notes allocated to equity component and debt discount																													20,600,000
Effective interest rate (as a percent)																													12.25%
Interest expense associated with semi-annual interest payment and non-cash amortization of debt discount																													4,700,000	9,200,000	8,800,000
Debt conversion, aggregate principal amount																						3,800,000	8,000,000	15,000,000	22,600,000	20,800,000			49,400,000	20,800,000
Number of shares of common stock converted from convertible notes																						1,069,821	2,287,765	4,346,376	6,493,144	6,163,221			14,197,106	6,163,221
Consideration of convertible debt allocated to the liability component																						3,800,000	8,000,000									14,700,000	21,700,000	18,300,000
Consideration of converted notes allocated to equity component																						300,000	600,000	1,900,000	3,400,000	5,200,000
Net proceeds from issuance of debt																																						160,600,000	212,900,000
Offering of additional notes as a percentage of par value																																															108.25%
Repurchase price as percentage of principal amount, if company undergoes change of control																																													101.00%
Repurchase price as percentage of principal amount																																													100.00%
Additional interest rate (as a percent)																																					0.50%				0.25%	0.75%	0.50%	0.25%
Increase in additional interest rate (as a percent)																																					0.25%												1.00%
Period required to pay increased additional interest																																					90 days
Available capacity under amended facility																																																		350,000,000	350,000,000			200,000,000	65,000,000	200,000,000	150,000,000
Number of borrowing options under amended facility																																																		2
Aggregate borrowing availability																																																			223,583,000	45,000,000
Covenant to apply cash collections to reduce outstanding borrowings, maximum availability under credit facility																																																					65,000,000
Covenant to apply cash collections to reduce outstanding borrowings, maximum availability under credit facility as percentage of then-applicable aggregate commitments																																																					17.50%
Intangible asset included in borrowing base																																																			30,000,000
Period over which intangible asset included in borrowing base declines in value																																																			2 years
Maturity period prior to scheduled maturity date		91 days
Availability under amended facility
Total Facility																																																		350,000,000	350,000,000			200,000,000	65,000,000	200,000,000	150,000,000
Borrowing Base																																																			251,237,000
Letters of Credit Issued																																																			27,654,000
Available Capacity																																																			223,583,000	45,000,000
Excess Capacity																																																			$ 178,583,000