LONG-TERM BORROWINGS (Details) (USD $)	1 Months Ended	12 Months Ended			1 Months Ended
	Mar. 31, 2011	Nov. 02, 2014	Nov. 03, 2013	Oct. 28, 2012	Jul. 31, 2014	Oct. 31, 2014	Sep. 30, 2009	Aug. 25, 2013	Apr. 30, 2011	Dec. 31, 2013	Oct. 30, 2011
Long-term borrowings [Abstract]
Long-term debt and capital lease obligations		$ 142,186,000	$ 194,021,000
Less current portion		10,381,000	11,818,000
Long-term debt and capital lease obligations non current		131,805,000	182,203,000
Long-term borrowings maturing in 2016		115,000,000
Minimum lease payments under the Company's capital lease obligations [Abstract]
2015		11,070,000
2016		7,546,000
2017		5,168,000
2018		4,698,000
Future minimum payments due		28,482,000
Less interest		1,296,000
Net minimum lease payments under capital leases		27,186,000
Less current portion of net minimum lease payments		10,381,000
Long-term portion of minimum lease payments		16,805,000
Notes converted to common stock		22,054,000	0	0
Capital lease obligations repaid	19,800,000
Interest payments		6,300,000	6,300,000	6,300,000
Deferred financing cost payments		346,000	40,000	198,000
Credit Facility [Member]
Long-term borrowings [Abstract]
Variable interest rate (in hundredths)		1.67%
Minimum lease payments under the Company's capital lease obligations [Abstract]
Maturity date of debt					Dec. 31, 2018
Maximum borrowing capacity					75,000,000
Current borrowing capacity		50,000,000
Available borrowing capacity					50,000,000
Amount outstanding under credit facility		0
Repayment period of debt					5 years
3.25% convertible senior notes due on April 1, 2016 [Member]
Long-term borrowings [Abstract]
Long-term debt and capital lease obligations		115,000,000	115,000,000
Interest rate percentage (in hundredths)		3.25%
Minimum lease payments under the Company's capital lease obligations [Abstract]
Maturity date of debt		Apr. 01, 2016
Notes converted to common stock		22,100,000
Face amount of each note converted	1,000
Number of shares each note is convertible to (in shares)	96
Conversion price per share (in dollars per share)	$ 10.37
Proceeds from notes payable, net	110,700,000
5.50% convertible senior notes due on October 1, 2014 [Member]
Long-term borrowings [Abstract]
Long-term debt and capital lease obligations		0	22,054,000
Interest rate percentage (in hundredths)		5.50%
Minimum lease payments under the Company's capital lease obligations [Abstract]
Original face amount of debt							57,500,000
Face amount of each note converted							1,000
Number of shares each note is convertible to (in shares)							197
Conversion price per share (in dollars per share)							$ 5.08
Proceeds from notes payable, net							54,900,000
Face amount of debt repurchased											35,400,000
Common stock issued upon conversion of debt (in shares)						4,300,000
Repayment period of debt		5 years
2.77% Capital lease obligations payable through July 2018 [Member]
Long-term borrowings [Abstract]
Long-term debt and capital lease obligations		20,481,000	25,065,000
Interest rate percentage (in hundredths)		2.77%
Minimum lease payments under the Company's capital lease obligations [Abstract]
Less interest		1,100,000
Maturity date of debt		Jul. 31, 2018
Original face amount of debt								26,400,000
Periodic payments								500,000
Frequency of periodic payment								per month
Repayment period of debt								5 years
Amount payable through the end of lease term		21,600,000
3.09% capital lease obligation payable through March 2016 [Member]
Long-term borrowings [Abstract]
Long-term debt and capital lease obligations		6,705,000	10,652,000
Interest rate percentage (in hundredths)		3.09%
Minimum lease payments under the Company's capital lease obligations [Abstract]
Less interest		200,000
Maturity date of debt		Mar. 30, 2016
Original face amount of debt									21,200,000
Periodic payments									400,000
Frequency of periodic payment									per month
Repayment period of debt									5 years
Amount payable through the end of lease term		6,900,000
Term Loan [Member]
Long-term borrowings [Abstract]
Long-term debt and capital lease obligations		0	21,250,000
Variable interest rate (in hundredths)			2.69%
Minimum lease payments under the Company's capital lease obligations [Abstract]
Maturity date of debt			Mar. 31, 2017
Original face amount of debt			25,000,000
Repayment of term loan										$ 21,300,000