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Note 2 - Acquisition - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | May 01, 2019 | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | --- | --- | ---
Goodwill | $ 26,753 |  | $ 20,109 | $ 20,458
Southwest Electronic Energy Corporation [Member] |  |  |  |
Cash |  | $ 942 |  |
Accounts receivable |  | 3,621 |  |
Inventories |  | 4,685 |  |
Other current assets |  | 431 |  |
Property, plant and equipment |  | 9,177 |  |
Goodwill |  | 6,534 |  |
Accounts payable |  | (1,060) |  |
Other current liabilities |  | (778) |  |
Deferred tax liability, net |  | (1,011) |  |
Net assets acquired |  | 26,190 |  |
Southwest Electronic Energy Corporation [Member] | Customer Relationships [Member] |  |  |  |
Intangible assets |  | 2,522 |  |
Southwest Electronic Energy Corporation [Member] | Trade Names [Member] |  |  |  |
Intangible assets |  | $ 1,127 |  |

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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=116869197&loc=d3e4845-128472 + Details
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- Definition Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=116869197&loc=d3e4845-128472 + Details
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- Definition Amount of deferred tax liability attributable to taxable temporary differences assumed at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=116821951&loc=d3e31917-109318 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=116869197&loc=d3e4845-128472 + Details
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