Note 3 - Acquisition - Total Purchase Consideration (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 21, 2021	Oct. 28, 2021	Oct. 21, 2021	Oct. 06, 2021	Dec. 31, 2020
Goodwill	$ 21,605	$ 21,448					$ 13,738
Z-Sciences [Member]
Goodwill						$ 111
Trade accounts receivable						24
Inventories						4
Accounts payable						(21)
Accrued expenses						(28)
Total purchase price						479
Z-Sciences [Member] | Customer Relationships [Member]
Identifiable intangible asset – Customer Relationships						$ 389
Videology [Member]
Goodwill				$ 4,596
Identifiable intangible asset – Customer Relationships				5,246
Trade accounts receivable				771
Inventories				1,726
Accounts payable				(281)
Accrued expenses				(162)
Total purchase price				12,094
Cash				71
Other current assets				57
Property and equipment				$ 70
Acculogic [Member]
Goodwill			$ 3,363
Identifiable intangible asset – Customer Relationships			5,123		$ 5,123
Trade accounts receivable			2,259
Inventories			1,329
Accounts payable			(406)
Accrued expenses			(2,950)
Total purchase price			9,426
Cash			312
Other current assets			240
Property and equipment			$ 156