Financial Instruments (Details Textual) (MCFs Non Recourse Debt [Member], USD $) In Millions, unless otherwise specified	Apr. 01, 2012	Jan. 01, 2012
MCFs Non Recourse Debt [Member]
Financial Instruments (Textual) [Abstract]
Principal amount of guaranteed investment related to debt service reserve fund	$ 23.8	$ 23.9
Guaranteed investment related to bond fund payment	$ 11.9	$ 9.9