Note 3 - Business Acquisition - Summary of Balances of Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Gross carrying amount	$ 3,668	$ 0
Accumulated amortization	(51)	0
Net carrying amount	3,617	0
Technology-Based Intangible Assets [Member]
Gross carrying amount	2,757	0
Accumulated amortization	(23)	0
Net carrying amount	2,734	0
Customer Relationships [Member]
Gross carrying amount	648	0
Accumulated amortization	(6)	0
Net carrying amount	642	0
Order or Production Backlog [Member]
Gross carrying amount	263	0
Accumulated amortization	(22)	0
Net carrying amount	$ 241	$ 0