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Note 3 - Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Net Revenue	$ 25,813	$ 16,447
Energy, Storage and Transmission [Member]
Net Revenue	9,152	1,141
Aerospace [Member]
Net Revenue	1,622	2,600
Industrial [Member]
Net Revenue	10,817	8,852
Research [Member]
Net Revenue	4,222	3,854
Transferred over Time [Member]
Net Revenue	17,957	8,810
Transferred over Time [Member] | Energy, Storage and Transmission [Member]
Net Revenue	9,094	1,141
Transferred over Time [Member] | Aerospace [Member]
Net Revenue	95	386
Transferred over Time [Member] | Industrial [Member]
Net Revenue	5,961	4,989
Transferred over Time [Member] | Research [Member]
Net Revenue	2,807	2,294
Transferred at Point in Time [Member]
Net Revenue	7,856	7,637
Transferred at Point in Time [Member] | Energy, Storage and Transmission [Member]
Net Revenue	58	0
Transferred at Point in Time [Member] | Aerospace [Member]
Net Revenue	1,527	2,214
Transferred at Point in Time [Member] | Industrial [Member]
Net Revenue	4,856	3,863
Transferred at Point in Time [Member] | Research [Member]
Net Revenue	$ 1,415	$ 1,560

X

- Definition

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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