LONG-TERM BORROWINGS (Details)	1 Months Ended		9 Months Ended
	Jan. 31, 2015 USD ($) shares $ / shares	Mar. 31, 2011 USD ($) shares $ / shares	Aug. 02, 2015 USD ($)	Nov. 02, 2014 USD ($)
Long-term borrowings [Abstract]
Long-term debt and capital lease obligations			$ 135,034,000	$ 142,186,000
Less current portion			16,577,000	10,381,000
Long-term debt and capital lease obligations non current			$ 118,457,000	131,805,000
Credit Facility [Member]
Long-term borrowings [Abstract]
Maturity date of debt			Dec. 31, 2018
Current borrowing capacity			$ 50,000,000
Maximum borrowing capacity			75,000,000
Amount outstanding under credit facility			0
Available borrowing capacity			$ 50,000,000
Interest rate (in hundredths)			1.69%
3.25% convertible senior notes due on April 1, 2016 [Member]
Long-term borrowings [Abstract]
Long-term debt and capital lease obligations			$ 57,500,000	115,000,000
Interest rate percentage (in hundredths)			3.25%
Maturity date of debt			Apr. 01, 2016
Number of shares each note is convertible to (in shares) | shares		96
Face amount of each note converted		$ 1,000
Conversion price per share (in dollars per share) | $ / shares		$ 10.37
Amount intended to be repaid with credit facility			$ 50,000,000
3.25 convertible senior notes due on April 2019 [Member]
Long-term borrowings [Abstract]
Long-term debt and capital lease obligations			$ 57,500,000	0
Interest rate percentage (in hundredths)			3.25%
Maturity date of debt			Apr. 01, 2019
Number of shares each note is convertible to (in shares) | shares	96
Face amount of each note converted	$ 1,000
Conversion price per share (in dollars per share) | $ / shares	$ 10.37
2.77% capital lease obligation payable through July 2018 [Member]
Long-term borrowings [Abstract]
Long-term debt and capital lease obligations			$ 16,643,000	20,481,000
Interest rate percentage (in hundredths)			2.77%
Maturity date of debt			Jul. 31, 2018
Original face amount of debt			$ 26,400,000
Repayment period of debt			5 years
Periodic payments			$ 500,000
Frequency of periodic payment			per month
Amount payable through the end of lease term			$ 17,400,000
Interest included in lease payments			800,000
3.09% capital lease obligation payable through March 2016 [Member]
Long-term borrowings [Abstract]
Long-term debt and capital lease obligations			$ 3,391,000	$ 6,705,000
Interest rate percentage (in hundredths)			3.09%
Maturity date of debt			Mar. 30, 2016
Original face amount of debt			$ 21,200,000
Repayment period of debt			5 years
Periodic payments			$ 400,000
Frequency of periodic payment			per month
Amount payable through the end of lease term			$ 3,400,000