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LEASES - Leases as per 840 (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 28, 2018	Dec. 27, 2019
Future minimum rental payments under capital leases
2019	$ 335
2020	204
2021	26
Total future minimum lease payments	565
Amount representing interest (at rates ranging from 3.25% to 3.75%)	(21)
Present value of net minimum lease payments under capital leases	544
Less current portion	320	$ 375
Capital lease noncurrent	$ 224
Interest rate, minimum (as a percent)	3.25%
Interest rate, maximum (as a percent)	3.75%
Future minimum rental payments under non-cancelable operating leases
2019	$ 4,442
2020	2,882
2021	2,036
2022	1,565
2023	668
2024 and thereafter	996
Total future minimum lease payments	$ 12,589

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- Definition

Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal, through the balance sheet date and due to be paid more than one year (or one operating cycle, if longer) after the balance sheet date.

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Amount of minimum lease payments for capital leases due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of minimum lease payments for capital leases due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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

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Present value of lessee's discounted obligation for lease payments from finance lease, classified as current.

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