Earnings Per Share (Tables)

6 Months Ended

Jun. 18, 2011

Earnings Per Share [Abstract]

Computation of basic and diluted earnings per share

	12 Weeks Ended						24 Weeks Ended
	June 18,			June 19,			June 18,			June 19,
	2011			2010			2011			2010
Numerator:
Net earnings	$	23,963		$	17,222		$	59,843		$	44,681
Adjustment for earnings allocated to nonvested restricted common stock		(403	)		(273	)		(992	)		(670	)
Net earnings used in calculating basic earnings per share		23,560			16,949			58,851			44,011
Adjustment for earnings reallocated from nonvested restricted common stock		12			6			31			15
Net earnings used in calculating diluted earnings per share	$	23,572		$	16,955		$	58,882		$	44,026
Denominator:
Weighted average shares outstanding		49,439,698			49,160,001			49,366,041			49,376,607
Adjustment for nonvested restricted common stock		(1,490,880	)		(1,248,223	)		(1,435,262	)		(1,170,522	)
Shares used in calculating basic earnings per share		47,948,818			47,911,778			47,930,779			48,206,085
Effect of dilutive stock options		1,342,848			1,056,525			1,311,765			1,043,953
Shares used in calculating diluted earnings per share		49,291,666			48,968,303			49,242,544			49,250,038
Net earnings per share:
Basic	$	0.49		$	0.35		$	1.23		$	0.91
Diluted	$	0.48		$	0.35		$	1.20		$	0.89