Leases - Narrative (Details) $ in Thousands	6 Months Ended
	Jun. 25, 2019 USD ($) restaurant	Dec. 26, 2018 USD ($)	Dec. 25, 2018 USD ($)
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets, net	$ 166,204
Operating lease liabilities	225,294
Cumulative effect increase to retained earnings for adoption of new accounting guidance	$ 17,384		$ 33,379
Operating lease not yet commenced, number of additional restaurant locations | restaurant	6
Operating lease not yet commenced, undiscounted payments	$ 72,000
Minimum
Lessee, Lease, Description [Line Items]
Operating and finance lease, terms for renewal	5 years
Incremental borrowing rate term	3 years
Maximum
Lessee, Lease, Description [Line Items]
Operating and finance lease, terms for renewal	20 years
Incremental borrowing rate term	30 years
Accounting Standards Update 2016-02
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets, net		$ 161,600
Operating lease liabilities		218,000
Cumulative effect increase to retained earnings for adoption of new accounting guidance		$ 8,700