Leases - Operating Lease Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 29, 2019	Dec. 30, 2018	Dec. 31, 2017
Obligation with Joint and Several Liability Arrangement [Line Items]
Rent expense		$ 14,000	$ 19,000
Cash paid for amounts included in the measurement of operating lease liabilities	$ 9,101
Right-of-use assets obtained in exchange for operating lease liabilities	$ 61,270
Weighted-average remaining lease term-operating leases ( in years )	9 years 8 months 12 days
Weighted-average discount rate-operating leases ( as a percent )	4.64%
Selling, General and Administrative Expenses
Obligation with Joint and Several Liability Arrangement [Line Items]
Operating lease cost	$ 9,980
Short term and variable lease cost	1,814
Total lease cost	$ 11,794