Note 1 - Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Foreign Currency Transaction Gain (Loss), before Tax, Total	$ 454	$ (727)	$ (1,364)
Goodwill, Impairment Loss	$ 0
Minimum [Member]
Warranty Term (Year)	1 year
Maximum [Member]
Warranty Term (Year)	2 years
Building and Building Improvements [Member] \| Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)	20 years
Building and Building Improvements [Member] \| Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)	40 years
Computer Equipment [Member] \| Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)	3 years
Computer Equipment [Member] \| Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)	8 years
Transportation Equipment [Member] \| Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)	5 years
Transportation Equipment [Member] \| Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)	20 years
Furniture and Fixtures [Member] \| Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)	3 years
Furniture and Fixtures [Member] \| Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)	5 years