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.

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Amount of liabilities incurred for goods and services received that are used in an entity's business and related party payables, assumed at the acquisition date.

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Amount of other liabilities due within one year or within the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of deferred tax liability attributable to taxable temporary differences assumed at the acquisition date.

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The amount of identifiable intangible assets recognized as of the acquisition date.

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Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed.

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Note 2 - Acquisition - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	May 01, 2019	Dec. 31, 2018
Goodwill	$ 27,018	$ 26,753		$ 20,109
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