Stock-Based Compensation (Tables)

12 Months Ended

Dec. 30, 2020

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Changes in Stock Options

				Weighted-Average		Aggregate
		Weighted-Average		Contractual Life		Intrinsic Value
	Shares	Exercise Price		Life (Years)		(in thousands)
Outstanding - December 26, 2018	2,102,404	$	7.68
Grants	323,900		11.51
Exercised	(234,728)		6.18
Forfeited, cancelled or expired	(114,006)		13.35
Outstanding - December 25, 2019	2,077,570	$	8.14
Exercised	(970,736)		6.04
Forfeited, cancelled or expired	(75,968)	$	12.14
Outstanding - December 30, 2020	1,030,866	$	9.82		5.51	$	8,638
Vested and expected to vest at December 30, 2020	1,026,480	$	9.81		5.50	$	8,609
Exercisable at December 30, 2020	685,007	$	9.02		4.28	$	6,288

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

	December 25, 2019		December 26, 2018
Expected volatility	28.7	%	28.4	%
Risk-free interest rate	2.3	%	2.9	%
Expected term (years)	6.25		6.25
Expected dividends	—		—

Schedule of Changes in Restricted Shares

Changes in restricted shares for the years ended December 30, 2020 and December 25, 2019, are as follows:

		Weighted-Average
	Shares	Fair Value
Unvested shares at December 26, 2018	490,700	$	10.91
Granted	299,052	$	11.62
Released	(147,862)	$	10.73
Forfeited, cancelled, or expired	(53,882)	$	11.81
Unvested shares at December 25, 2019	588,008	$	11.23
Granted	415,022	$	12.50
Released	(158,748)	$	11.73
Forfeited, cancelled, or expired	(101,878)	$	12.32
Unvested shares at December 30, 2020	742,404	$	11.68