LONG-TERM BORROWINGS (Details) (USD $)	1 Months Ended	3 Months Ended		9 Months Ended					9 Months Ended		1 Months Ended	9 Months Ended		9 Months Ended		1 Months Ended			9 Months Ended		1 Months Ended	9 Months Ended		3 Months Ended		9 Months Ended
	Mar. 31, 2011	Jul. 29, 2012	Jul. 31, 2011	Jul. 29, 2012	Jul. 31, 2011	Apr. 29, 2012	Oct. 30, 2011	Mar. 31, 2011 Credit Facility [Member]	Jul. 29, 2012 Amended Credit Facility [Member]	Mar. 31, 2011 Amended Credit Facility [Member]	Mar. 31, 2011 3.25% convertible senior notes due on April 1, 2016 [Member]	Jul. 29, 2012 3.25% convertible senior notes due on April 1, 2016 [Member]	Oct. 30, 2011 3.25% convertible senior notes due on April 1, 2016 [Member]	Jul. 29, 2012 Term Loan [Member]	Oct. 30, 2011 Term Loan [Member]	Jun. 30, 2011 5.5% convertible senior notes due on October 1, 2014 [Member]	Mar. 31, 2011 5.5% convertible senior notes due on October 1, 2014 [Member]	Sep. 30, 2009 5.5% convertible senior notes due on October 1, 2014 [Member]	Jul. 29, 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]	Jul. 29, 2012 3.09% capital lease obligation payable through March 2016 [Member]	Oct. 30, 2011 3.09% capital lease obligation payable through March 2016 [Member]	Jul. 29, 2012 4.75% financing loan with customer [Member]	Jul. 31, 2011 4.75% financing loan with customer [Member]	Jul. 29, 2012 4.75% financing loan with customer [Member]	Jul. 31, 2011 4.75% financing loan with customer [Member]	Oct. 30, 2011 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		$ 178,459,000		$ 178,459,000			$ 158,160,000					$ 115,000,000	$ 115,000,000	$ 24,375,000	$ 0				$ 22,054,000	$ 22,054,000		$ 16,198,000	$ 19,218,000	$ 832,000		$ 832,000		$ 1,888,000
Less current portion		7,470,000		7,470,000			5,583,000
Long-term debt and capital lease obligations non current		170,989,000		170,989,000			152,577,000
Interest rate percentage (in hundredths)												3.25%							5.50%			3.09%		4.75%		4.75%
Variable interest rate														2.50%
Maturity date of debt												Apr. 01, 2016		Mar. 02, 2017					Oct. 01, 2014			Mar. 31, 2016
Original face amount of debt						25,000,000								25,000,000				57,500,000			21,200,000								3,700,000
Periodic payments														600,000								400,000
Frequency of periodic payment														quarterly payments								per month
Amortization period of debt				10 years
Repayment period																					5 years
Face amount of each note converted											1,000							1,000
Number of shares issued for each note converted (in shares)																147.529	147.529
Number of shares each note is convertible to (in shares)											96.3879							196.7052
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
Aggregate commitments of the lenders								65,000,000		30,000,000
Maximum amount of financed capital assets									75,000,000
Amount of investment basket								15,000,000	25,000,000
Amount outstanding under credit facility									0
Remaining borrowing capacity under credit facility									30,000,000
Common stock issued to extinguish debt (in shares)			738,000		5,229,000											700,000	4,500,000
Common stock issued to extinguish debt			6,468,000		45,637,000											6,500,000	39,200,000
Cash paid for convertible notes acquired																3,200,000	19,700,000
Cash paid for each note converted																647	647
Face amount of debt repurchased																5,000,000	30,400,000
Debt extinguishment loss		0	(4,973,000)	0	(35,259,000)											(5,000,000)	(30,100,000)
Write off of deferred financing fees																300,000	1,700,000
Amount payable through the end of lease term																						17,200,000
Interest included in lease payments																						1,000,000
Value of product shipped for repayment of loan																								$ 400,000	$ 300,000	$ 900,000	$ 900,000
Estimated date of loan repayment																										2013-11-13