Note 6 - Goodwill and Intangible Assets - Summary of Goodwill and Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Goodwill	$ 62,328	$ 62,328
Goodwill, Accumulated Depreciation	(714)	(714)
Goodwill, Ending Balance	61,614	61,614	$ 57,255
Finite-lived intangible assets, gross	12,723	12,976
Finite-lived intangible assets, accumulated amortization	12,303	12,377
Finite-lived intangible assets, net	420	599
Total intangible assets other than goodwill	13,914	14,167
Total intangible assets other than goodwill	1,611	1,790
Customer Relationships [Member]
Finite-lived intangible assets, gross	9,192	9,445
Finite-lived intangible assets, accumulated amortization	9,132	9,325
Finite-lived intangible assets, net	$ 60	$ 120
Customer Relationships [Member] | Minimum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	5 years	5 years
Customer Relationships [Member] | Maximum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	15 years	15 years
Technology-Based Intangible Assets [Member]
Finite-lived intangible assets, gross	$ 1,959	$ 1,959
Finite-lived intangible assets, accumulated amortization	1,599	1,480
Finite-lived intangible assets, net	$ 360	$ 479
Technology-Based Intangible Assets [Member] | Minimum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	3 years	3 years
Technology-Based Intangible Assets [Member] | Maximum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	7 years	7 years
Trade Names [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	10 years	10 years
Finite-lived intangible assets, gross	$ 1,572	$ 1,572
Finite-lived intangible assets, accumulated amortization	1,572	1,572
Finite-lived intangible assets, net	0	0
Trade Names 1 [Member]
Indefinite trade name	$ 1,191	$ 1,191