Related Party Transactions - Schedule of Asset Purchase Agreement Relating to the Territories (Detail)	12 Months Ended
	Jan. 03, 2016	Dec. 28, 2014
Johnson City and Morristown Tennessee [Member]
Business Acquisition [Line Items]
Acquisition Closing Date	May 23, 2014
Knoxville, Tennessee [Member]
Business Acquisition [Line Items]
Acquisition Closing Date	Oct. 24, 2014
Louisville, Kentucky and Evansville, Indiana [Member]
Business Acquisition [Line Items]
Acquisition Closing Date	Feb. 27, 2015
Paducah and Pikeville, Kentucky [Member]
Business Acquisition [Line Items]
Acquisition Closing Date	May 01, 2015
CCR [Member] | Johnson City and Morristown Tennessee [Member]
Business Acquisition [Line Items]
Asset Agreement Date		May 07, 2014
Acquisition Closing Date		May 23, 2014
CCR [Member] | Knoxville, Tennessee [Member]
Business Acquisition [Line Items]
Asset Agreement Date		Aug. 28, 2014
Acquisition Closing Date		Oct. 24, 2014
CCR [Member] | Cleveland and Cookeville Tennessee [Member]
Business Acquisition [Line Items]
Asset Agreement Date		Dec. 05, 2014
Acquisition Closing Date	Jan. 30, 2015
CCR [Member] | Louisville, Kentucky and Evansville, Indiana [Member]
Business Acquisition [Line Items]
Asset Agreement Date		Dec. 17, 2014
Acquisition Closing Date	Feb. 27, 2015
CCR [Member] | Paducah and Pikeville, Kentucky [Member]
Business Acquisition [Line Items]
Asset Agreement Date	Feb. 13, 2015
Acquisition Closing Date	May 01, 2015
CCR [Member] | Norfolk, Fredericksburg and Staunton, Virginia and Elizabeth City, North Carolina [Member]
Business Acquisition [Line Items]
Asset Agreement Date	Sep. 23, 2015
Acquisition Closing Date	Oct. 30, 2015