Note 3 - Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Net sales	$ 30,711	$ 22,072
Medical [Member]
Net sales	15,265	12,342
Industrial [Member]
Net sales	8,667	6,218
Aerospace and Defense [Member]
Net sales	6,778	3,512
Transferred over Time [Member]
Net sales	22,392	16,653
Transferred over Time [Member] | Medical [Member]
Net sales	9,806	8,959
Transferred over Time [Member] | Industrial [Member]
Net sales	6,529	4,630
Transferred over Time [Member] | Aerospace and Defense [Member]
Net sales	6,057	3,064
Transferred at Point in Time [Member]
Net sales	7,131	4,491
Transferred at Point in Time [Member] | Medical [Member]
Net sales	4,915	2,893
Transferred at Point in Time [Member] | Industrial [Member]
Net sales	1,791	1,336
Transferred at Point in Time [Member] | Aerospace and Defense [Member]
Net sales	425	262
Noncash Consideration [Member]
Net sales	1,187	928
Noncash Consideration [Member] | Medical [Member]
Net sales	544	490
Noncash Consideration [Member] | Industrial [Member]
Net sales	347	252
Noncash Consideration [Member] | Aerospace and Defense [Member]
Net sales	$ 296	$ 186