Note 3 - Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Net sales	$ 115,168	$ 104,106
Medical [Member]
Net sales	63,047	55,098
Aerospace and Defense [Member]
Net sales	16,639	20,624
Industrial [Member]
Net sales	35,482	28,384
Transferred over Time [Member]
Net sales	89,377	87,093
Transferred over Time [Member] | Medical [Member]
Net sales	47,285	45,694
Transferred over Time [Member] | Aerospace and Defense [Member]
Net sales	14,879	18,948
Transferred over Time [Member] | Industrial [Member]
Net sales	27,213	22,451
Transferred at Point in Time [Member]
Net sales	20,962	11,296
Transferred at Point in Time [Member] | Medical [Member]
Net sales	13,250	6,398
Transferred at Point in Time [Member] | Aerospace and Defense [Member]
Net sales	861	454
Transferred at Point in Time [Member] | Industrial [Member]
Net sales	6,851	4,444
Noncash Consideration [Member]
Net sales	4,829	5,717
Noncash Consideration [Member] | Medical [Member]
Net sales	2,512	3,006
Noncash Consideration [Member] | Aerospace and Defense [Member]
Net sales	899	1,222
Noncash Consideration [Member] | Industrial [Member]
Net sales	$ 1,418	$ 1,489