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LONG-TERM BORROWINGS (Details) (USD $) | 1 Months Ended | 12 Months Ended |  | 12 Months Ended |  | 1 Months Ended | 12 Months Ended |  | 12 Months Ended |  |  | 1 Months Ended | 12 Months Ended |  | 1 Months Ended | 12 Months Ended |  | 12 Months Ended |
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Mar. 31, 2011 | Oct. 28, 2012 | Oct. 30, 2011 | Oct. 31, 2010 | Mar. 31, 2011 Credit Facility [Member] | Oct. 28, 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] | Oct. 28, 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] | Oct. 28, 2012 Term Loan [Member] | Apr. 29, 2012 Term Loan [Member] | Oct. 30, 2011 Term Loan [Member] | Jun. 30, 2011 5.50% convertible senior notes due on October 1, 2014 [Member] | Mar. 31, 2011 5.50% convertible senior notes due on October 1, 2014 [Member] | Sep. 30, 2009 5.50% convertible senior notes due on October 1, 2014 [Member] | Oct. 28, 2012 5.50% convertible senior notes due on October 1, 2014 [Member] | Oct. 30, 2011 5.50% convertible senior notes due on October 1, 2014 [Member] | Apr. 30, 2011 3.09% capital lease obligation payable through March 2016 [Member] | Oct. 28, 2012 3.09% capital lease obligation payable through March 2016 [Member] | Oct. 30, 2011 3.09% capital lease obligation payable through March 2016 [Member] | Oct. 28, 2012 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 |  | $ 176,737,000 | $ 158,160,000 |  |  |  |  |  | $ 115,000,000 | $ 115,000,000 | $ 23,750,000 |  | $ 0 |  |  |  | $ 22,054,000 | $ 22,054,000 |  | $ 15,175,000 | $ 19,218,000 | $ 758,000 | $ 1,888,000 |
Less current portion |  | 7,781,000 | 5,583,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt and capital lease obligations non current |  | 168,956,000 | 152,577,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate percentage (in hundredths) |  |  |  |  |  |  |  |  | 3.25% |  |  |  |  |  |  |  | 5.50% |  |  | 3.09% |  | 4.75% |  |
Variable interest rate (in hundredths) |  |  |  |  |  |  |  |  |  |  | 2.50% |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term borrowings maturing in 2013 |  | 3,258,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term borrowings maturing in 2014 |  | 24,554,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term borrowings maturing in 2015 |  | 2,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term borrowings maturing in 2016 |  | 117,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term borrowings maturing in 2017 |  | 13,750,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum lease payments under the Company's capital lease obligations [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2013 |  | 4,962,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2014 |  | 4,580,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2015 |  | 4,580,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2016 |  | 1,907,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Future minimum payments due |  | 16,029,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Less interest |  | 854,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net minimum lease payments under capital leases |  | 15,175,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Less current portion of net minimum lease payments |  | 4,523,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term portion of minimum lease payments |  | 10,652,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maturity date of debt |  |  |  |  |  | Apr. 30, 2015 |  |  | Apr. 01, 2016 |  | Mar. 01, 2017 |  |  |  |  |  | Oct. 01, 2014 |  |  | Mar. 30, 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 |  |  |  |  |  |  |  |  |  |  |  |  |
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 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit facility interest rate (in hundredths) |  |  |  |  |  | 2.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount outstanding under credit facility |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Remaining borrowing capacity under credit facility |  |  |  |  |  | 30,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Face amount of each note converted |  |  |  |  |  |  |  | 1,000 |  |  |  |  |  |  |  | 1,000 |  |  |  |  |  |  |  |
Number of shares each note is convertible to (in shares) |  |  |  |  |  |  |  | 96.3879 |  |  |  |  |  |  |  | 196.7052 |  |  |  |  |  |  |  |
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 debt repurchased |  |  |  |  |  |  |  |  |  |  |  |  |  | 5,000,000 | 30,400,000 |  |  | 35,400,000 |  |  |  |  |  |
Common stock issued to extinguish debt (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  | 700,000 | 4,500,000 |  |  |  |  |  |  |  |  |
Common stock issued to extinguish debt |  |  | 45,637,000 |  |  |  |  |  |  |  |  |  |  | 6,500,000 | 39,200,000 |  |  |  |  |  |  |  |  |
Cash paid for convertible notes acquired |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,200,000 | 19,700,000 |  |  |  |  |  |  |  |  |
Number of shares issued for each note converted (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  | 147.529 | 147.529 |  |  |  |  |  |  |  |  |
Cash paid for each note converted |  |  |  |  |  |  |  |  |  |  |  |  |  | 647 | 647 |  |  |  |  |  |  |  |  |
Debt extinguishment loss |  | 0 | (35,259,000) | 0 |  |  |  |  |  |  |  |  |  | (5,000,000) | (30,100,000) |  |  |  |  |  |  |  |  |
Write off of deferred financing fees |  |  |  |  |  |  |  |  |  |  |  |  |  | 300,000 | 1,700,000 |  |  |  |  |  |  |  |  |
Repayment period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5 years |  |  |  |  |
Amount payable through the end of lease term |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 16,000,000 |  |  |  |
Value of product shipped for repayment of loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,000,000 | 1,100,000 |
Estimated date of loan repayment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2013-11-03 |  |
Interest payments |  | 6,300,000 | 9,700,000 | 7,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred financing cost payments |  | $ 200,000 | $ 4,300,000 | $ 1,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal, through the balance sheet date and due to be paid more than one year (or one operating cycle, if longer) after the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6455314&loc=d3e45023-112735 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 7, 10, 13 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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