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Leases - Schedule of Lease Terms and Weighted Average Discount Rate (Details)
Jun. 28, 2020
Dec. 29, 2019
Weighted-average remaining lease term (years)    
Operating leases 3 years 5 months 15 days 3 years 9 months 21 days
Finance leases 2 years 4 months 28 days 2 years 7 months 24 days
Weighted-average discount rates:    
Operating leases 6.00% 6.00%
Finance leases 6.06% 5.81%