LONG-TERM OBLIGATIONS (Detail Textuals) - USD ($) $ in Thousands		6 Months Ended
	Jun. 11, 2015	Jun. 30, 2015	Dec. 30, 2014
Line of Credit Facility [Line Items]
Non-cancelable operating lease obligations		$ 1,100
First Tennessee Bank National Association ("First Tennessee") | Unsecured revolving credit facility (the "Credit Facility")
Line of Credit Facility [Line Items]
Description of reference rate basis		LIBOR Market Index Rate
Variable interest rate in addition to reference rate		1.50%
Interest rate		1.69%
First Tennessee Bank National Association ("First Tennessee") | Unsecured revolving credit facility (the "Credit Facility") | Minimum
Line of Credit Facility [Line Items]
Non-usage fee for current loan agreement in annual amount percentage		0.15%
First Tennessee Bank National Association ("First Tennessee") | Unsecured revolving credit facility (the "Credit Facility") | Maximum
Line of Credit Facility [Line Items]
Non-usage fee for current loan agreement in annual amount percentage		0.35%
Amended and Restated Loan Agreement | First Tennessee Bank National Association ("First Tennessee") | Unsecured revolving credit facility (the "Credit Facility")
Line of Credit Facility [Line Items]
Revolving credit facility			$ 25,000
First Amendment to Amended and Restated Loan Agreement | First Tennessee Bank National Association ("First Tennessee") | Unsecured revolving credit facility (the "Credit Facility")
Line of Credit Facility [Line Items]
Revolving credit facility	$ 30,000
Credit facility increased	$ 5,000