Summary of Significant Accounting Policies Business (Details)	12 Months Ended
	Jan. 03, 2015 stores	Dec. 28, 2013	Dec. 29, 2012
Entity Location [Line Items]
Number of Stores	279
Number of States in which Entity Operates	38
Merchandise product categories	100.00%	100.00%	100.00%
Core Boating Products [Member]
Entity Location [Line Items]
Merchandise product categories	81.30%	83.50%	84.70%
Merchandise Expansion Products [Member]
Entity Location [Line Items]
Merchandise product categories	18.70%	16.50%	15.30%