Capital Stock (Tables)

12 Months Ended

Dec. 29, 2012

Capital Stock [Abstract]

Summary of valuation assumptions used to calculate fair value of options granted

	2012			2010
Expected dividend yield		0	%		0	%
Expected stock price volatility		59	%		55	%
Risk-free interest rate		0.9	%		2.3	%
Expected life of options		4.7 years			4.7 years

Summary of stock option activity

	Shares			Option Price per Share		Weighted Average Price		Weighted Average Remaining Terms (years)		Aggregate Intrinsic Value
Balance at December 26, 2009		1,462,800		$	0.47 – $7.74	$	3.36
Granted		30,000		$	19.37	$	19.37
Exercised		(489,900	)	$	0.75 – $6.90	$	1.87
Cancelled		(12,000	)	$	6.24	$	6.24
Balance at December 25, 2010		990,900		$	0.47 – $19.37	$	4.54
Exercised		(298,100	)	$	0.47 – $7.74	$	2.41
Balance at December 31, 2011		692,800		$	2.00 – $19.37	$	5.46
Granted		20,000		$	22.71	$	22.71
Exercised		(438,800	)	$	2.00 – $7.74	$	4.27
Balance at December 29, 2012		274,000		$	2.54 – $22.71	$	8.62		5.0	$	6,994,000
Options exercisable at December 29, 2012		200,000		$	2.54 – $19.37	$	6.57		4.0	$	5,516,000

Summary of information concerning currently outstanding and exercisable options

	Options Outstanding						Options Exercisable
Range of Exercise Price	Number Outstanding		Weighted- Average Remaining Contractual Life (years)		Weighted- Average Exercise Price		Number Exercisable		Weighted- Average Exercise Price
$  2.54		34,000		0.4	$	2.54		34,000	$	2.54
$  5.05 – $5.67		53,000		5.9	$	5.66		37,000	$	5.65
$  6.24 – $7.74		137,000		4.5	$	6.87		117,000	$	6.72
$19.37		30,000		8.0	$	19.37		12,000	$	19.37
$22.71		20,000		9.2	$	22.71		—	$	—
Balance at December 29, 2012		274,000		5.0	$	8.62		200,000	$	6.57

Summary of restricted stock activity

	Shares			Weighted Average Price
Balance at December 26, 2009		—		$	—
Granted		45,000		$	7.84
Balance at December 25, 2010		45,000		$	7.84
Granted		178,800		$	19.12
Vested		(9,000	)	$	7.84
Cancelled		(10,000	)	$	19.40
Balance at December 31, 2011		204,800		$	17.12
Granted		15,000		$	26.70
Vested		(45,646	)	$	16.84
Balance at December 29, 2012		174,154		$	18.02