Acquisition (Details) $ in Thousands	3 Months Ended					12 Months Ended	15 Months Ended
	Apr. 02, 2017 USD ($)	Jan. 01, 2017 USD ($)	Oct. 02, 2016 USD ($)	Jul. 03, 2016 USD ($)	Apr. 03, 2016 USD ($)	Jan. 01, 2017 USD ($)	Apr. 02, 2017 USD ($)
Business Acquisition [Line Items]
Right of First Refusal, Number of States	20						20
Number of Restaurants Acquired						56	99
Business acquisitions, purchase price	$ 20,373				$ 7,127	$ 48,088	$ 68,461
Business acquisitions, properties purchased						15
Proceeds from sale-leaseback transactions	0				5,015
Restaurant sales	$ 239,852				$ 222,519
February 23, 2016 Acquisition [Member]
Business Acquisition [Line Items]
Number of Restaurants Acquired					12
Business acquisitions, purchase price					$ 7,127
May 25, 2016 Acquisition [Member]
Business Acquisition [Line Items]
Number of Restaurants Acquired				6
Business acquisitions, purchase price				$ 12,080
Business acquisitions, properties purchased				5
July 14, 2016 Acquisition [Member]
Business Acquisition [Line Items]
Number of Restaurants Acquired				4
Business acquisitions, purchase price				$ 5,445
Business acquisitions, properties purchased				3
August 23, 2016 Acquisition [Member]
Business Acquisition [Line Items]
Number of Restaurants Acquired			7
Business acquisitions, purchase price			$ 8,755
Business acquisitions, properties purchased			6
October 4, 2016 Acquisition [Member]
Business Acquisition [Line Items]
Number of Restaurants Acquired		3
Business acquisitions, purchase price		$ 1,623
November 15, 2016 Acquisition [Member]
Business Acquisition [Line Items]
Number of Restaurants Acquired		17
Business acquisitions, purchase price		$ 7,251
December 1, 2016 Acquisition [Member]
Business Acquisition [Line Items]
Number of Restaurants Acquired		7
Business acquisitions, purchase price		$ 5,807
Business acquisitions, properties purchased		1
February 28, 2017 Acquisition [Member]
Business Acquisition [Line Items]
Number of Restaurants Acquired	43
Business acquisitions, purchase price	$ 20,373
2016 Acquisitions [Member]
Business Acquisition [Line Items]
Business acquisitions, properties purchased						15
Properties sold in sale-leaseback transactions						14
Proceeds from sale-leaseback transactions						$ 19,100
2017 Acquisitions [Member]
Business Acquisition [Line Items]
Tax deductible goodwill	6,500						$ 6,500
Acquired Restaurants [Member]
Business Acquisition [Line Items]
Restaurant sales	$ 20,700				$ 1,800