Leases - Estimated Minimum Future Lease Payments (Details) - USD ($) $ in Thousands	Mar. 26, 2019	Jan. 01, 2019
Finance Lease Liabilities
Present value of lease obligations	$ 1,044	$ 1,267
Operating Lease Liabilities
Present value of lease obligations	238,113	$ 0
Company as Lessee
Finance Lease Liabilities
2019	422
2020	335
2021	200
2022	86
2023	79
Thereafter	125
Total lease payments	1,247
Amounts representing interest	(203)
Present value of lease obligations	1,044
Operating Lease Liabilities
2019	27,407
2020	34,854
2021	33,526
2022	34,330
2023	29,491
Thereafter	194,678
Total lease payments	354,286
Total lease payments	(116,173)
Present value of lease obligations	238,113
Operating Subleases
2019	(2,569)
2020	(3,209)
2021	(3,207)
2022	(3,189)
2023	(3,014)
Thereafter	(23,456)
Total lease payments	38,644
Net Lease Commitments
2019	25,260
2020	31,980
2021	30,519
2022	31,227
2023	26,556
Thereafter	171,347
Total lease payments	316,889
Amounts representing interest	(116,376)
Present value of lease obligations	$ 200,513