LONG-TERM BORROWINGS (Details) (USD $)	1 Months Ended			1 Months Ended		1 Months Ended	3 Months Ended		1 Months Ended	9 Months Ended		1 Months Ended		9 Months Ended			1 Months Ended	9 Months Ended		1 Months Ended	12 Months Ended
	Mar. 31, 2011	Aug. 03, 2014	Nov. 03, 2013	Dec. 31, 2013 Newly Amended Credit Facility [Member]	Aug. 03, 2014 Newly Amended Credit Facility [Member]	Mar. 31, 2011 3.25% convertible senior notes due on April 1, 2016 [Member]	Aug. 03, 2014 3.25% convertible senior notes due on April 1, 2016 [Member]	Nov. 03, 2013 3.25% convertible senior notes due on April 1, 2016 [Member]	Aug. 25, 2013 2.77% capital lease obligation payable through July 2018 [Member]	Aug. 03, 2014 2.77% capital lease obligation payable through July 2018 [Member]	Nov. 03, 2013 2.77% capital lease obligation payable through July 2018 [Member]	Dec. 31, 2013 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]	Aug. 03, 2014 5.50% convertible senior notes due on October 1, 2014 [Member]	Nov. 03, 2013 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]	Aug. 03, 2014 3.09% capital lease obligation payable through March 2016 [Member]	Nov. 03, 2013 3.09% capital lease obligation payable through March 2016 [Member]	Dec. 29, 2013 Term Loan [Member]	Nov. 03, 2013 Term Loan [Member]	Aug. 03, 2014 Term Loan [Member]
Long-term borrowings [Abstract]
Long-term debt and capital lease obligations		$ 166,589,000	$ 194,021,000				$ 115,000,000	$ 115,000,000		$ 21,743,000	$ 25,065,000			$ 22,054,000	$ 22,054,000			$ 7,792,000	$ 10,652,000		$ 21,250,000	$ 0
Less current portion		10,306,000	11,818,000
Long-term debt and capital lease obligations non current		156,283,000	182,203,000
Interest rate percentage (in hundredths)							3.25%			2.77%				5.50%				3.09%
Maturity date of debt				Dec. 31, 2018			Apr. 01, 2016			Jul. 31, 2018				Oct. 01, 2014				Mar. 30, 2016			Mar. 31, 2017
Original face amount of debt									26,400,000				57,500,000				21,200,000				25,000,000
Variable interest rate (in hundredths)					1.92%
Periodic payments									500,000								400,000
Frequency of periodic payment									per month								per month
Repayment of term loan																				21,300,000
Short-term debt, refinanced amount												22,100,000
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					5 years								5 years
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							197
Face amount of debt repurchased																35,400,000
Amount payable through the end of lease term										23,000,000								8,000,000
Interest included in lease payments										$ 1,300,000								$ 200,000