BANK CREDIT ARRANGEMENTS (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 25, 2010
Bank Credit Arrangements
Outstanding amount	$ 11,403	$ 8,824
Short-term borrowings
Bank Credit Arrangements
Total line of credit facility for short-term borrowings	51,857
Outstanding amount	5,046
Unused borrowing	46,811
Other short-term bank loans
Bank Credit Arrangements
Outstanding amount	$ 6,357
Weighted average interest rate on short-term borrowings (as a percent)	3.42%	3.38%