LONG-TERM BORROWINGS (Details) (USD $)	1 Months Ended			1 Months Ended	3 Months Ended	1 Months Ended	3 Months Ended		3 Months Ended		1 Months Ended	3 Months Ended			1 Months Ended	3 Months Ended		3 Months Ended
	Mar. 31, 2011	Jan. 27, 2013	Oct. 28, 2012	Mar. 25, 2012 Credit Facility [Member]	Jan. 27, 2013 Credit Facility [Member]	Mar. 31, 2011 3.25% convertible senior notes due on April 1, 2016 [Member]	Jan. 27, 2013 3.25% convertible senior notes due on April 1, 2016 [Member]	Oct. 28, 2012 3.25% convertible senior notes due on April 1, 2016 [Member]	Jan. 27, 2013 Term Loan [Member]	Oct. 28, 2012 Term Loan [Member]	Sep. 30, 2009 5.5% convertible senior notes due on October 1, 2014 [Member]	Jan. 27, 2013 5.5% convertible senior notes due on October 1, 2014 [Member]	Oct. 28, 2012 5.5% convertible senior notes due on October 1, 2014 [Member]	Oct. 30, 2011 5.5% convertible senior notes due on October 1, 2014 [Member]	Apr. 30, 2011 3.09% capital lease obligation payable through March 2016 [Member]	Jan. 27, 2013 3.09% capital lease obligation payable through March 2016 [Member]	Oct. 28, 2012 3.09% capital lease obligation payable through March 2016 [Member]	Jan. 27, 2013 4.75% financing loan with customer [Member]	Jan. 29, 2012 4.75% financing loan with customer [Member]	Oct. 28, 2012 4.75% financing loan with customer [Member]	Jan. 31, 2010 4.75% financing loan with customer [Member]
Long-term borrowings [Abstract]
Long-term debt and capital lease obligations		$ 174,910,000	$ 176,737,000				$ 115,000,000	$ 115,000,000	$ 23,125,000	$ 23,750,000		$ 22,054,000	$ 22,054,000			$ 14,145,000	$ 15,175,000	$ 586,000		$ 758,000
Less current portion		7,645,000	7,781,000
Long-term debt and capital lease obligations non current		167,265,000	168,956,000
Interest rate percentage (in hundredths)							3.25%					5.50%				3.09%		4.75%
Maturity date of debt							Apr. 01, 2016		Mar. 01, 2017			Oct. 01, 2014				Mar. 31, 2016
Date at which Company was in compliance with loan covenants					Jan. 27, 2013
Reduction in interest rate (in hundredths)				0.25%
Original face amount of debt						115,000,000			25,000,000		57,500,000				21,200,000						3,700,000
Variable interest rate (in hundredths)					2.50%				2.50%
Periodic payments									600,000						400,000
Frequency of periodic payment									quarterly payments						monthly payments
Amortization period of debt									10 year
Repayment period of debt															5 years
Amount outstanding under credit facility					0
Remaining borrowing capacity under credit facility					30,000,000
Conversion price per share (in dollars per share)						$ 10.37					$ 5.08
Proceeds from notes payable, net						110,700,000					54,900,000
Capital lease obligations repaid	19,800,000
Face amount of each note converted						1,000					1,000
Number of shares each note is convertible to (in shares)						96.3879					196.7052
Face amount of debt repurchased														35,400,000
Amount payable through the end of lease term																14,900,000
Interest included in lease payments																800,000
Value of product shipped for repayment of loan																		$ 200,000	$ 300,000
Estimated date of loan repayment																		2013-11-03