Note 8 - Segment and Enterprise-wide Disclosures - Net Sales to Unaffiliated Customers by Geography (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Net Sales	$ 47,411	$ 39,028	$ 144,601	$ 120,697
UNITED STATES
Net Sales	28,799	24,242	88,136	74,734
GERMANY
Net Sales	3,317	2,814	10,246	8,675
CANADA
Net Sales	2,615	1,962	8,093	6,141
UNITED KINGDOM
Net Sales	2,004	1,269	5,952	4,150
Other Countries [Member]
Net Sales	$ 10,676	$ 8,741	$ 32,174	$ 26,997