Leases - Schedule of Weighted Average Remaining Lease Term, Discount Rates and Other Information Related to Leases (Details) $ in Thousands	6 Months Ended
	Jun. 25, 2019 USD ($)
Weighted-average remaining lease term
Operating leases	14 years 9 months 18 days
Finance leases	12 years 2 months 12 days
Weighted-average discount rate
Operating leases	11.80%
Finance leases	11.30%
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	$ 2,367
Operating cash flows from finance leases	0
Financing cash flows from finance leases	625
Leased assets obtained in exchange for lease obligations
Operating leases	15,010
Finance leases	$ 0