Note 4 - Leases - Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended
Apr. 05, 2020	Mar. 31, 2019
Amortization expense	$ 120	$ 111
Interest expense	77	91
Operating lease expense	351	351
Variable lease expense	68	79
Total lease expense	$ 616	$ 632

Amount of interest expense on finance lease liability.

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-Name Accounting Standards Codification
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-Section 50
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Amount of amortization expense attributable to right-of-use asset from finance lease.

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- Definition

Amount of lease cost recognized by lessee for lease contract.

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-Publisher FASB
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Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

+ References

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Amount of variable lease cost, excluded from lease liability, recognized when obligation for payment is incurred for finance and operating leases.

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