Note 3 - Acquisition - Total Purchase Consideration (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 21, 2021	Oct. 28, 2021	Oct. 21, 2021	Oct. 06, 2021	Dec. 31, 2020
Goodwill	$ 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		$ 2,912
Identifiable intangible asset – Customer Relationships		5,074		$ 5,074
Trade accounts receivable		2,630
Inventories		1,329
Accounts payable		(406)
Accrued expenses		(2,950)
Total purchase price		9,297
Cash		312
Other current assets		240
Property and equipment		$ 156