Leases - Schedule of Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jul. 02, 2019	Jul. 02, 2019	Jan. 02, 2019	Jan. 01, 2019
Leases [Abstract]
Operating Lease, Payments	$ 10,813	$ 21,506
Assets
Operating lease assets, net	215,347	215,347	$ 219,883	$ 0
Finance lease assets, net	1,057	1,057
Total Leased Asset	216,404	216,404
Liabilities [Abstract]
Current operating lease liabilities	21,781	21,781	0	0
Current finance lease liabilities	820	820
Liabilities, Noncurrent [Abstract]
Long-term operating lease liabilities, net	233,902	233,902	$ 260,931	$ 0
Long-term finance lease liabilities	300	300
Present value of lease liabilities	256,803	256,803
Operating Lease Cost [Abstract]
Operating lease cost	10,188	20,332
Finance lease cost
Amortization of lease assets	179	350
Interest on lease liabilities	20	40
Operating And Finance Lease Cost	10,387	20,722
Sublease income	(88)	(200)
Total lease cost, net	$ 10,299	$ 20,522
Operating Lease, Weighted Average Remaining Lease Term	9 years 4 months 24 days	9 years 4 months 24 days
Finance Lease, Weighted Average Remaining Lease Term	2 years 1 month 6 days	2 years 1 month 6 days
Operating Lease, Weighted Average Discount Rate, Percent	8.68%	8.68%
Finance Lease, Weighted Average Discount Rate, Percent	7.16%	7.16%
Finance Lease Payments	$ 160	$ 377
Cash Paid For Operating And Finance Lease Liabilities	10,973	21,883
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	2,049	5,210
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability	179	229
Right-of-Use Asset Obtained in Exchange for Operating And Finance Lease Liability	$ 2,228	$ 5,439