Long-Term Investment (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jul. 01, 2012	Apr. 01, 2012	Jan. 01, 2012
Schedule of long-term investment balance
Beginning balance	$ 1,273		$ 1,563
Contributions	15	114
Capital distributions		(404)
Ending balance	$ 1,288	$ 1,273	$ 1,563