Consolidated Balance Sheets Balance Sheet Parenthetical (USD $)	Dec. 31, 2013	Dec. 25, 2012
Capital Unit [Line Items]
Preferred Stock, Par or Stated Value Per Share (in dollars per share)		$ 0.0001
Preferred Stock, Shares Authorized (in shares)		2,000,000
Preferred Stock, Shares Issued	0	0
Preferred Stock, Shares Outstanding	0	0
Treasury Stock, Shares	4,283,405	2,249,554
Common Class A [Member]
Capital Unit [Line Items]
Common Stock, Par or Stated Value Per Share	$ 0.0001	$ 0.0001
Common Stock, Shares Authorized	112,500,000	112,500,000
Common Stock, Shares, Issued	30,573,851	30,458,238
Common Stock, Shares, Outstanding	26,290,446	28,208,684
Common Class B [Member]
Capital Unit [Line Items]
Common Stock, Par or Stated Value Per Share	$ 0.0001	$ 0.0001
Common Stock, Shares Authorized	10,000,000	10,000,000
Common Stock, Shares, Issued	1,382,393	1,383,687
Common Stock, Shares, Outstanding	1,382,393	1,383,687
Preferred Stock, Par or Stated Value Per Share (in dollars per share)	$ 0.0001
Preferred Stock, Shares Authorized (in shares)	2,000,000