Note 3 - Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Net Sales	$ 33,369	$ 35,276	$ 103,278	$ 98,505
Medical [Member]
Net Sales	17,835	20,539	59,814	54,343
Industrial [Member]
Net Sales	10,435	10,838	28,966	28,959
Aerospace and Defense [Member]
Net Sales	5,099	3,899	14,498	15,203
Transferred over Time [Member]
Net Sales	24,833	26,059	76,225	72,536
Transferred over Time [Member] | Medical [Member]
Net Sales	12,029	14,753	42,324	37,725
Transferred over Time [Member] | Industrial [Member]
Net Sales	8,195	8,104	21,378	21,563
Transferred over Time [Member] | Aerospace and Defense [Member]
Net Sales	4,609	3,202	12,523	13,248
Transferred at Point in Time [Member]
Net Sales	7,634	8,173	23,770	22,599
Transferred at Point in Time [Member] | Medical [Member]
Net Sales	5,185	5,366	15,564	15,044
Transferred at Point in Time [Member] | Industrial [Member]
Net Sales	1,999	2,314	6,532	6,301
Transferred at Point in Time [Member] | Aerospace and Defense [Member]
Net Sales	450	493	1,674	1,254
Noncash Consideration [Member]
Net Sales	902	1,044	3,283	3,370
Noncash Consideration [Member] | Medical [Member]
Net Sales	621	420	1,926	1,574
Noncash Consideration [Member] | Industrial [Member]
Net Sales	241	420	1,056	1,095
Noncash Consideration [Member] | Aerospace and Defense [Member]
Net Sales	$ 40	$ 204	$ 301	$ 701