Note 3 - Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Net Sales	$ 35,021	$ 32,518	$ 69,909	$ 63,229
Medical [Member]
Net Sales	20,607	18,538	41,979	33,804
Industrial [Member]
Net Sales	9,059	9,454	18,531	18,121
Aerospace and Defense [Member]
Net Sales	5,355	4,526	9,399	11,304
Transferred over Time [Member]
Net Sales	25,662	24,084	51,392	46,477
Transferred over Time [Member] | Medical [Member]
Net Sales	14,570	13,165	30,295	22,972
Transferred over Time [Member] | Industrial [Member]
Net Sales	6,593	6,930	13,183	13,459
Transferred over Time [Member] | Aerospace and Defense [Member]
Net Sales	4,499	3,989	7,914	10,046
Transferred at Point in Time [Member]
Net Sales	8,117	7,295	16,136	14,426
Transferred at Point in Time [Member] | Medical [Member]
Net Sales	5,318	4,763	10,379	9,678
Transferred at Point in Time [Member] | Industrial [Member]
Net Sales	2,125	2,196	4,533	3,987
Transferred at Point in Time [Member] | Aerospace and Defense [Member]
Net Sales	674	336	1,224	761
Noncash Consideration [Member]
Net Sales	1,242	1,139	2,381	2,326
Noncash Consideration [Member] | Medical [Member]
Net Sales	719	610	1,305	1,154
Noncash Consideration [Member] | Industrial [Member]
Net Sales	341	328	815	675
Noncash Consideration [Member] | Aerospace and Defense [Member]
Net Sales	$ 182	$ 201	$ 261	$ 497