INTEREST AND OTHER EXPENSE, NET (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2013	Mar. 31, 2012
INTEREST AND OTHER EXPENSE, NET
Interest expense	$ (1,789)	$ (2,201)
Interest and dividend income	49	61
Derivative gain	202	671
Bank and portfolio asset management fees	(192)	(164)
Other expense, net	(407)	(554)
Total	$ (2,137)	$ (2,187)