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Note 2 - Revenue Recognition (Tables) | 12 Months Ended
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Dec. 31, 2019
Notes Tables |
Disaggregation of Revenue [Table Text Block] |
|  | Years Ended December 31,
|  | 2019 |  | 2018 |  | 2017
Net sales of: |  |  |  |  |  |  |  |  |  |  |  |
Products |  | $ | 193,016 |  |  | $ | 183,186 |  |  | $ | 146,275 |
Tooling and Machinery |  |  | 2,730 |  |  |  | 4,302 |  |  |  | 1,181 |
Engineering services |  |  | 2,635 |  |  |  | 2,967 |  |  |  | 387 |
Total net sales |  | $ | 198,381 |  |  | $ | 190,455 |  |  | $ | 147,843 |
Contract with Customer, Asset and Liability [Table Text Block] |
|  | Contract Liabilities
|  | Years Ended
|  | December 31,
|  | 2019 |  | 2018
Deferred revenue - beginning of period |  | $ | 2,507 |  |  | $ | 871 |
Acquired in Dielectrics business combination |  |  | - |  |  |  | 2,175 |
Increases due to consideration received from customers |  |  | 3,216 |  |  |  | 4,188 |
Revenue recognized |  |  | (3,149 | ) |  |  | (4,727 | )
Deferred revenue - end of period |  | $ | 2,574 |  |  | $ | 2,507 |
|  | Contract Assets
|  | Years Ended
|  | December 31,
|  | 2019 |  | 2018
Unbilled Receivables - beginning of period |  | $ | 65 |  |  | $ | - |
Increases due to revenue recognized - not invoiced to customers |  |  | 831 |  |  |  | 301 |
Decreases due to customer invoicing |  |  | (824 | ) |  |  | (236 | )
Unbilled Receivables - end of period |  | $ | 72 |  |  | $ | 65 |

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045 + Details
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