Loss per Unit - Schedule of Net Income (Loss) Per Limited Partner Unit (Details) - $ / shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 27, 2021	Jun. 28, 2020	Jun. 27, 2021	Jun. 28, 2020
Earnings Per Unit [Abstract]
Basic weighted average units outstanding (in shares)	56,622	56,494	56,588	56,455
Weighted average limited partner units outstanding (in shares)	56,622	56,494	56,588	56,455
Net loss per unit - basic (in dollars per share)	$ (1.04)	$ (2.35)	$ (2.99)	$ (6.17)
Net loss per unit - diluted (in dollars per share)	$ (1.04)	$ (2.35)	$ (2.99)	$ (6.17)