Earnings per Unit (Details) - $ / shares shares in Thousands	3 Months Ended
	Mar. 29, 2020	Mar. 31, 2019
Earnings Per Unit [Abstract]
Basic weighted average units outstanding (in shares)	56,414	56,310
Diluted weighted average units outstanding (in shares)	56,414	56,310
Net income (loss) per unit - basic (in dollars per share)	$ (3.83)	$ (1.49)
Net income (loss) per unit - diluted (in dollars per share)	$ (3.83)	$ (1.49)