Earnings Per Unit (Tables)

9 Months Ended

Sep. 24, 2022

Earnings Per Share [Abstract]

Schedule of Reconciliation of earnings per unit

Income Per Unit Calculation	13 weeks ended				39 weeks ended
(thousands of dollars, except unit and per unit data)	September 24, 2022		September 25, 2021		September 24, 2022		September 25, 2021
	(unaudited)		(unaudited)		(unaudited)		(unaudited)
Basic and diluted earnings per unit:
Income attributable to USPB available to unitholders (numerator)
Class A	$	4,312	$	12,102	$	15,489	$	25,848
Class B	$	38,812	$	108,918	$	139,397	$	232,635
Weighted average outstanding units (denominator)
Class A		735,385		735,385		735,385		735,385
Class B		755,385		755,385		755,385		755,385
Per unit amount
Class A	$	5.86	$	16.46	$	21.06	$	35.15
Class B	$	51.38	$	144.19	$	184.54	$	307.97