Stock-Based Employee Compensation (Tables)

12 Months Ended

Dec. 31, 2013

Stock-Based Employee Compensation [Abstract]

Stock Option Compensation Cost

	Fiscal Year Ended
	December 25,		December 31,
	2012		2013
Restaurant operating expenses	$	74	$	332
General and administrative costs		304		1,357
Total stock compensation cost	$	378	$	1,689

Summary Of Stock Option Activity

	December 31, 2013
	Shares	Weighted average exercise price		Weighted average Remaining Contractual Term	Aggregate Intrinsic Value ($000's)
Outstanding at beginning of year	825,000	$	13.09
Granted	765,500		20.82
Exercised	(28,475)		13.00
Forfeited	(65,500)		14.09
Outstanding at end of period	1,496,525	$	17.00	9.07 years	$	9,826
Options exercisable at end of period	166,400	$	13.12	8.61 years	$	1,740

Summary Of Non-Vested Shares

	December 31, 2013
	Shares		Weighted average Grant-Date Fair Value
Non-vested shares at beginning of year	825,000	$	4.93
Granted	765,500		8.30
Vested	(194,875)		4.94
Forfeited	(65,500)		5.48
Non-vested shares at end of period	1,330,125	$	6.84

Schedule Of Stock Option Valuation Assumptions

	2012	2013
Weighted average grant date fair value	$4.82	$8.30
Weighted average risk-free interest rate	0.58%	1.44%
Weighted average expected life	5.4 years	5.49 years
Weighted average volatility	40.21%	41.65%
Expected dividend	—	—