Condensed Consolidated Statements of Stockholders’ Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interest
Balance beginning of period (in shares) at Dec. 27, 2019		58,140
Balance beginning of period at Dec. 27, 2019	$ 636,927	$ 581	$ 654,420	$ (18,134)	$ (39)	$ 99
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(19,018)			(18,994)		(24)
Foreign currency translation adjustments	(434)				(434)
Equity-based compensation	1,362		1,362
Balance end of period (in shares) at Mar. 27, 2020		58,140
Balance end of period at Mar. 27, 2020	618,837	$ 581	655,782	(37,128)	(473)	75
Balance beginning of period (in shares) at Dec. 27, 2019		58,140
Balance beginning of period at Dec. 27, 2019	636,927	$ 581	654,420	(18,134)	(39)	99
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(22,247)
Foreign currency translation adjustments	(317)
Balance end of period (in shares) at Jun. 26, 2020		59,217
Balance end of period at Jun. 26, 2020	617,153	$ 592	657,199	(40,341)	(356)	59
Balance beginning of period (in shares) at Mar. 27, 2020		58,140
Balance beginning of period at Mar. 27, 2020	618,837	$ 581	655,782	(37,128)	(473)	75
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(3,229)			(3,213)		(16)
Foreign currency translation adjustments	117				117
Equity-based compensation	1,185		1,185
Capital contributions	243		243
Additional share issuance (in shares)		1,077
Additional share issuance	0	$ 11	(11)
Balance end of period (in shares) at Jun. 26, 2020		59,217
Balance end of period at Jun. 26, 2020	$ 617,153	$ 592	657,199	(40,341)	(356)	59
Balance beginning of period (in shares) at Dec. 25, 2020	59,217	59,217
Balance beginning of period at Dec. 25, 2020	$ 617,739	$ 592	659,093	(43,018)	756	316
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(6,036)			(6,014)		(22)
Foreign currency translation adjustments	(52)				(52)
Equity-based compensation	1,060		1,060
Balance end of period (in shares) at Mar. 26, 2021		59,217
Balance end of period at Mar. 26, 2021	$ 612,711	$ 592	660,153	(49,032)	704	294
Balance beginning of period (in shares) at Dec. 25, 2020	59,217	59,217
Balance beginning of period at Dec. 25, 2020	$ 617,739	$ 592	659,093	(43,018)	756	316
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(7,092)
Foreign currency translation adjustments	$ (20)
Balance end of period (in shares) at Jun. 25, 2021	59,217	59,217
Balance end of period at Jun. 25, 2021	$ 622,890	$ 592	671,356	(50,076)	736	282
Balance beginning of period (in shares) at Mar. 26, 2021		59,217
Balance beginning of period at Mar. 26, 2021	612,711	$ 592	660,153	(49,032)	704	294
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(1,056)			(1,044)		(12)
Foreign currency translation adjustments	32				32
Equity-based compensation	1,178		1,178
Equity Contributions	$ 10,025		10,025
Balance end of period (in shares) at Jun. 25, 2021	59,217	59,217
Balance end of period at Jun. 25, 2021	$ 622,890	$ 592	$ 671,356	$ (50,076)	$ 736	$ 282