Note 4 - Goodwill and Other Intangible Assets - Schedule of Finite-lived Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Balance	$ 1,173	$ 1,343
Additions	64	21
Amortization of Intangible Assets, Total	176	191
Abandonment Loss	560
Balance	501	1,173
Customer Relationships [Member]
Balance	507	651
Additions	0	0
Amortization of Intangible Assets, Total	147	144
Abandonment Loss	0
Balance	360	507
Intellectual Property [Member]
Balance	0	5
Additions	0	0
Amortization of Intangible Assets, Total	0	5
Abandonment Loss	0
Balance	0	0
Trade Names [Member]
Balance	589	631
Additions	0	0
Amortization of Intangible Assets, Total	29	42
Abandonment Loss	560
Balance	0	589
Patents [Member]
Balance	77	56
Additions	64	21
Amortization of Intangible Assets, Total	0	0
Abandonment Loss	0
Balance	$ 141	$ 77