Income Attributable to USPB Per Unit (Detail Textuals)	3 Months Ended		9 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012
Percentage of Income allocated to Class A unit holders	10.00%	10.00%	10.00%	10.00%
Percentage of Income allocated to Class B unit holders	90.00%	90.00%	90.00%	90.00%
Description of condition for maximum units authorized to issue and conversion of rights to units	Upon termination of the former CEO’s, Steven Hunt, employment agreement and until eighteen months after the termination of the employment agreement, at the election of Mr. Hunt, or upon mutual agreement of the Board of the Company and Mr. Hunt, Mr. Hunt may purchase up to 20,000 Class A units, or upon agreement of Mr. Hunt and the Board of the Company, Mr. Hunt may convert the contractual unit appreciation rights to up to 20,000 Class A units.
Number of shares CEO may purchase on termination or eighteen months after termination to Class A unitholders	20,000			20,000
Number of shares converted into unit appreciation rights to Class A unitholders	20,000			20,000
Maximum number of shares purchase or converted into contractual rights to Class A unitholders	20,000			20,000
Per unit price to purchase or convert contractual rights to Class A unitholders (in dollars per unit)	55			55