DEBT AND LINES OF CREDIT (Details 3) (USD $)	0 Months Ended	3 Months Ended	9 Months Ended
	Jul. 18, 2013	Sep. 28, 2013	Sep. 28, 2013	Jul. 17, 2013
Secured Credit Facility
Term loan, original loan amount				$ 185,000,000
Amount of Borrowings used for Repayment of Debt	120,000,000
Repayment of entire outstanding principal amount	152,600,000
Loss on extinguishment of debt		3,355,000	3,355,000
Revolving line of credit
Secured Credit Facility
Maximum borrowing capacity	275,000,000			65,000,000
Term of credit facility	5 years
Amount of optional increase in aggregate principal amount of borrowings	50,000,000
Outstanding balance		$ 101,000,000	$ 101,000,000
Interest rate per annum (as a percent)		2.19%	2.19%
Commitment fee (as a percent)	0.35%
Revolving line of credit | Maximum
Secured Credit Facility
Commitment fee (as a percent)	0.40%
Revolving line of credit | Minimum
Secured Credit Facility
Commitment fee (as a percent)	0.25%
Revolving line of credit | Base Rate
Secured Credit Facility
Reference rate description	Base Rate
Margin on reference rate (as a percent)	1.00%
Revolving line of credit | Base Rate | Maximum
Secured Credit Facility
Margin on reference rate (as a percent)	1.25%
Revolving line of credit | Base Rate | Minimum
Secured Credit Facility
Margin on reference rate (as a percent)	0.50%
Revolving line of credit | Eurodollar Rate
Secured Credit Facility
Reference rate description	Eurodollar Rate
Margin on reference rate (as a percent)	2.00%
Revolving line of credit | Eurodollar Rate | Maximum
Secured Credit Facility
Margin on reference rate (as a percent)	2.25%
Revolving line of credit | Eurodollar Rate | Minimum
Secured Credit Facility
Margin on reference rate (as a percent)	1.50%