Note 2 - Acquisition - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 30, 2021	Dec. 31, 2020
Goodwill	$ 38,068		$ 27,018
UEHC [Member]
Cash	736
Accounts receivable	3,570
Inventories	3,622
Prepaid expenses and other current assets	785
Property, plant and equipment	429
Goodwill	11,019
Other intangible assets	8,830	$ 8,830
Other noncurrent assets	991
Accounts payable	(1,450)
Accrued compensation and related benefits	(540)
Accrued expenses and other current liabilities	(720)
Deferred tax liability, net	(2,213)
Other noncurrent liabilities	(803)
Net assets acquired	$ 24,256