Note 3 - Consolidated Financial Statement Details - Consolidated Balance Sheets (Details) - USD ($) $ in Thousands |
Jan. 01, 2017 |
Jan. 03, 2016 |
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Restricted cash – guaranteed deposits | $ 805 | ||||||||||||
| Trade accounts receivable | 22,284 | 28,797 | |||||||||||
| Other receivables | 511 | 1,347 | |||||||||||
| Allowance for doubtful accounts | (171) | (259) | |||||||||||
| Accounts receivable—net | 22,624 | 29,885 | |||||||||||
| Raw materials | 14,863 | 19,385 | |||||||||||
| Work in process | 1,557 | 1,416 | |||||||||||
| Finished goods | 3,678 | 4,400 | |||||||||||
| Parts and other | 576 | 676 | |||||||||||
| Inventories | 20,674 | 25,877 | |||||||||||
| Cost (a) (e): | |||||||||||||
| Property, plant and equipment | [1],[2] | 49,344 | 49,485 | ||||||||||
| Property, plant and equipment | [1],[2] | 49,344 | 49,485 | ||||||||||
| Less accumulated depreciation (a): | |||||||||||||
| Accumulated depreciation, property, plant and equipment | [1] | (34,907) | (33,042) | ||||||||||
| Accumulated depreciation, property, plant and equipment | [1] | (34,907) | (33,042) | ||||||||||
| Property, plant and equipment—net | 14,437 | 16,443 | |||||||||||
| Payroll | 2,134 | 2,649 | |||||||||||
| Professional services | 281 | 367 | |||||||||||
| Accrued liabilities | 4,604 | 5,562 | |||||||||||
| Land [Member] | |||||||||||||
| Cost (a) (e): | |||||||||||||
| Property, plant and equipment | [1],[2] | 1,648 | 1,648 | ||||||||||
| Property, plant and equipment | [1],[2] | 1,648 | 1,648 | ||||||||||
| Less accumulated depreciation (a): | |||||||||||||
| Accumulated depreciation, property, plant and equipment | [1] | ||||||||||||
| Accumulated depreciation, property, plant and equipment | [1] | ||||||||||||
| Building [Member] | |||||||||||||
| Cost (a) (e): | |||||||||||||
| Property, plant and equipment | [1],[2] | 9,852 | 9,852 | ||||||||||
| Property, plant and equipment | [1],[2] | 9,852 | 9,852 | ||||||||||
| Less accumulated depreciation (a): | |||||||||||||
| Accumulated depreciation, property, plant and equipment | [1] | (8,174) | (7,719) | ||||||||||
| Accumulated depreciation, property, plant and equipment | [1] | (8,174) | (7,719) | ||||||||||
| Machinery and Equipment [Member] | |||||||||||||
| Cost (a) (e): | |||||||||||||
| Property, plant and equipment | [1],[2],[3],[4] | 31,615 | 30,707 | ||||||||||
| Property, plant and equipment | [1],[2],[3],[4] | 31,615 | 30,707 | ||||||||||
| Less accumulated depreciation (a): | |||||||||||||
| Accumulated depreciation, property, plant and equipment | [1],[3],[4] | (22,460) | (20,347) | ||||||||||
| Accumulated depreciation, property, plant and equipment | [1],[3],[4] | (22,460) | (20,347) | ||||||||||
| Furniture and Fixtures [Member] | |||||||||||||
| Cost (a) (e): | |||||||||||||
| Property, plant and equipment | [1],[2] | 556 | 599 | ||||||||||
| Property, plant and equipment | [1],[2] | 556 | 599 | ||||||||||
| Less accumulated depreciation (a): | |||||||||||||
| Accumulated depreciation, property, plant and equipment | [1] | (438) | (496) | ||||||||||
| Accumulated depreciation, property, plant and equipment | [1] | (438) | (496) | ||||||||||
| Computer Equipment [Member] | |||||||||||||
| Cost (a) (e): | |||||||||||||
| Property, plant and equipment | [1],[2],[5] | 3,544 | 3,447 | ||||||||||
| Property, plant and equipment | [1],[2],[5] | 3,544 | 3,447 | ||||||||||
| Less accumulated depreciation (a): | |||||||||||||
| Accumulated depreciation, property, plant and equipment | [1],[5] | (2,842) | (2,284) | ||||||||||
| Accumulated depreciation, property, plant and equipment | [1],[5] | (2,842) | (2,284) | ||||||||||
| Leasehold Improvements [Member] | |||||||||||||
| Cost (a) (e): | |||||||||||||
| Property, plant and equipment | [1],[2] | 2,129 | 3,232 | ||||||||||
| Property, plant and equipment | [1],[2] | 2,129 | 3,232 | ||||||||||
| Less accumulated depreciation (a): | |||||||||||||
| Accumulated depreciation, property, plant and equipment | [1] | (993) | (2,196) | ||||||||||
| Accumulated depreciation, property, plant and equipment | [1] | (993) | (2,196) | ||||||||||
| Customer Related [Member] | |||||||||||||
| Less accumulated depreciation (a): | |||||||||||||
| Other accrued liabilities | 898 | 1,852 | |||||||||||
| Restructuring [Member] | |||||||||||||
| Less accumulated depreciation (a): | |||||||||||||
| Other accrued liabilities | 27 | ||||||||||||
| Vendor Related [Member] | |||||||||||||
| Less accumulated depreciation (a): | |||||||||||||
| Other accrued liabilities | 613 | 383 | |||||||||||
| Other Accrued Liabilities [Member] | |||||||||||||
| Less accumulated depreciation (a): | |||||||||||||
| Other accrued liabilities | $ 651 | $ 311 | |||||||||||
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