Note 12 - Commitments and Contingencies (Details Textual) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2017 |
Jan. 01, 2017 |
Jan. 03, 2016 |
|
| Operating Leases, Rent Expense | $ 2,412 | $ 2,296 | $ 2,358 |
| Insurance Installments [Member] | |||
| Purchase Obligation, Due in Next Twelve Months | 169 | 187 | 218 |
| Open Non-cancellable Purchase Orders for Raw Materials [Member] | |||
| Purchase Obligation, Due in Next Twelve Months | 14,391 | 13,602 | 13,215 |
| Cost of Sales [Member] | |||
| Operating Leases, Rent Expense, Net | 1,519 | 1,558 | 1,502 |
| Selling, General and Administrative Expenses [Member] | |||
| Operating Leases, Rent Expense, Net | 893 | $ 738 | $ 856 |
| Indemnification Agreement [Member] | |||
| Loss Contingency Accrual | $ 0 | ||
| X | ||||||||||
- Definition Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line. No definition available.
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| X | ||||||||||
- Definition Amount of loss contingency liability. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Minimum amount of purchase arrangement maturing in the next fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments. No definition available.
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| X | ||||||||||
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