Fair Value Measurements (Tables)

9 Months Ended

Sep. 08, 2013

Fair Value Disclosures [Abstract]

Carrying Amounts and Fair Values of Certain Assets

The following tables summarize the carrying amounts and fair values of certain assets at September 8, 2013 and December 30, 2012:

	At September 8, 2013
			Fair Value Estimated Using
	Carrying Amount		Level 1 Inputs		Level 2 Inputs		Level 3 Inputs
Cash equivalents	$	30,010	$	30,010	$	—	$	—
Restricted cash equivalents		51,605		51,605		—		—
Investments in marketable securities		2,722		2,722		—		—

	At December 30, 2012
			Fair Value Estimated Using
	Carrying Amount		Level 1 Inputs		Level 2 Inputs		Level 3 Inputs
Cash equivalents	$	44,531	$	44,531	$	—	$	—
Restricted cash equivalents		50,591		50,591		—		—
Investments in marketable securities		2,097		2,097		—		—