NATURE OF OPERATIONS AND ACCOUNTING POLICIES. (Details 3) (Interest rate swap, Designated, Cash flow, USD $) In Millions, unless otherwise specified	Dec. 28, 2013
Interest rate swap \| Designated \| Cash flow
Financial instruments and fair value
Notional amount	$ 5.0
Fixed interest rate (as a percent)	3.10%

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 13

-Sentence Column B

Name:	invest_DerivativeNotionalAmount
Namespace Prefix:	invest_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant