DEBT (Details) (USD $)	0 Months Ended	12 Months Ended				0 Months Ended									12 Months Ended
	Jul. 22, 2010	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011	Dec. 28, 2013 Payable Annually Commencing on April 30, 2015	Dec. 14, 2006 Agreement Unsecured Debt	Dec. 28, 2013 Agreement Unsecured Debt	Dec. 29, 2012 Agreement Unsecured Debt	Dec. 14, 2011 Agreement Unsecured Debt	Dec. 28, 2013 Prudential Agreement	Apr. 09, 2007 Prudential Agreement	Apr. 30, 2007 B-1 Notes Notes Payable	Sep. 07, 2007 B-2 Notes Notes Payable	Dec. 28, 2013 B-1 and B-2 Notes	Dec. 28, 2013 B-1 and B-2 Notes Notes Payable	Dec. 31, 2012 Tax Increment Financing
Debt
Aggregate principal amount of debt											$ 175,000,000	$ 110,000,000	$ 40,000,000			$ 25,000,000
Prudential Agreement, fixed interest rate														5.79%
Debt instrument, term															10 years
Debt instrument, increase, additional borrowings	25,000,000	70,299,000	71,988,000	19,841,000
Debt instrument, periodic payment, principal					30,000,000
Debt instrument, unused borrowing capacity, amount										50,000,000
Debt instrument, interest rate																3.60%
Cross default trigger, minimum																10,000,000
Prudential Agreement - 5.79 percent		150,000,000	150,000,000
Tax increment financing debt		24,600,000	0
Capital leases		800,000	1,000,000
Foreign subsidiary debt		14,200,000	14,900,000
Debt and capital lease obligations		189,600,000	165,900,000
Less current maturities		(15,363,000)	(15,176,000)
Long-term debt		174,166,000	150,729,000
Line of Credit Facility
Amount of revolving credit						120,000,000			150,000,000
Line of credit facility, term						60 months
Line of credit facility, amount outstanding							$ 0	$ 0