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Leases - Aggregate minimum lease commitments (Details) $ in Thousands	Dec. 27, 2018 USD ($)
Operating Leases
2019	$ 11,317
2020	10,169
2021	9,670
2022	9,910
2023	9,038
2024 and thereafter	80,523
Total minimum lease payments	130,627
Capital Leases
2019	3,073
2020	2,978
2021	2,679
2022	2,718
2023	2,718
2024 and thereafter	16,940
Total minimum lease payments	31,106
Less: amount representing interest	(6,978)
Total present value of minimum capital lease payments	$ 24,128

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Amount of minimum lease payments for capital leases.

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Amount necessary to reduce net minimum lease payments to present value for capital leases.

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