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Stock-Based Compensation - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 24, 2020	Jun. 26, 2019	Jun. 24, 2020	Jun. 26, 2019	Dec. 25, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, options outstanding (shares)	1,641,851		1,641,851		2,077,570
Common stock, options vested (shares)			1,258,437
Common stock, options unvested (shares)	383,414		383,414
Unvested restricted shares outstanding (shares)	818,021		818,021		588,008
Stock-based compensation expense	$ 700	$ 600	$ 1,261	$ 1,129
Premium Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, options outstanding (shares)	820,342		820,342
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense, recognition period			2 years 5 months 15 days
Unrecognized compensation expense	$ 1,300		$ 1,300
Restricted Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense, recognition period			3 years 2 months 19 days
Unvested restricted shares outstanding (shares)	733,885		733,885
Unrecognized compensation expense	$ 8,000		$ 8,000
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense, recognition period			2 years 10 months 13 days
Unvested restricted shares outstanding (shares)	36,058		36,058
Unrecognized compensation expense	$ 100		$ 100
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense, recognition period			1 year 10 months 13 days
Unrecognized compensation expense	$ 500		$ 500
Unvested restricted shares outstanding (shares)	48,078		48,078