Leases - Assets and Liabilities (Details) $ in Thousands	Dec. 27, 2019 USD ($)
Operating And Finance Lease, Right-of-Use Assets [Abstract]
Operating lease assets	$ 42,812
Finance lease assets	3,962
Total right-of-use assets, gross	46,774
Less: accumulated depreciation and amortization	(2,632)
Right-of-use assets, net	44,142
Current liabilities:
Current portion of operating lease liabilities	12,149
Current portion of finance lease liabilities	456
Lease obligations	12,605
Noncurrent liabilities:
Operating lease liabilities	31,972
Finance lease liabilities	1,084
Long-term lease obligations	33,056
Total lease obligations	$ 45,661