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Note 1 - Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2020
Notes Tables |
Schedule of Inventory, Current [Table Text Block] |
|  | 2020 |  |  | 2019 |
Raw materials |  | $ | 14,865 |  |  | $ | 15,245 |
Work in process |  |  | 969 |  |  |  | 479 |
Finished goods |  |  | 242 |  |  |  | 41 |
Reserves |  |  | (2,159 | ) |  |  | (1,486 | )
Total |  | $ | 13,917 |  |  | $ | 14,279 |
Property, Plant and Equipment [Table Text Block] |
Buildings (in years) |  | 39 |
Leasehold improvements (in years) |  | 3 - 15 |
Manufacturing equipment (in years) |  | 3 - 7 |
Office and other equipment (in years) |  | 3 - 7 |
|  | 2020 |  |  | 2019 |
Land |  | $ | 176 |  |  | $ | 360 |
Building and Leasehold Improvements |  |  | 5,999 |  |  |  | 9,660 |
Manufacturing Equipment |  |  | 22,685 |  |  |  | 21,908 |
Office and Other Equipment |  |  | 7,148 |  |  |  | 7,192 |
Accumulated Depreciation and Amortization |  |  | (29,582 | ) |  |  | (29,539 | )
Total Property and Equipment, Net |  | $ | 6,426 |  |  | $ | 9,581 |
Revenue from External Customers by Products and Services [Table Text Block] |
|  | 2020 |  |  | 2019 |
Medical |  | $ | 55,098 |  |  | $ | 62,612 |
Aerospace and Defense |  |  | 20,624 |  |  |  | 18,207 |
Industrial |  |  | 28,384 |  |  |  | 35,514 |
Total Net Sales |  | $ | 104,106 |  |  | $ | 116,333 |
Schedule of Long-lived Assets by Geographical Areas [Table Text Block] |
|  | United States |  |  | Mexico |  |  | China |  |  | Total |
December 31, 2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property and equipment, net |  | $ | 5,057 |  |  | $ | 681 |  |  | $ | 688 |  |  | $ | 6,426 |
Operating Lease Assets |  | $ | 5,574 |  |  |  | 3,117 |  |  |  | 307 |  |  | $ | 8,998 |
Other assets |  | $ | 1,173 |  |  |  | - |  |  |  | - |  |  | $ | 1,173 |
December 31, 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property and equipment, net |  | $ | 8,024 |  |  | $ | 961 |  |  | $ | 596 |  |  | $ | 9,581 |
Operating Lease Assets |  | $ | 1,213 |  |  |  | 3,425 |  |  |  | 189 |  |  | $ | 4,827 |
Other assets |  | $ | 3,718 |  |  |  | - |  |  |  | - |  |  | $ | 3,718 |

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