Note 3 - Supplemental Balance Sheet Information (in Thousands) (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2018	Dec. 31, 2011
Depreciation, Amortization and Accretion, Net, Total	$ 2,000	$ 2,100
Goodwill, Impaired, Accumulated Impairment Loss	2,500	0
Goodwill, Ending Balance	1,708	4,166
Finite-Lived Intangible Assets, Gross, Total	5,833	5,652
Goodwill, Impairment Loss	2,458	0
Resource Plus, Inc [Member]
Goodwill, Ending Balance			$ 2,000
Goodwill, Impairment Loss	2,000
Mexico Business Member]
Goodwill, Ending Balance				$ 500
Goodwill, Impairment Loss	500
Resource Plus, Inc [Member]
Business Acquisition, Percentage of Voting Interests Acquired			51.00%
Mexico Business Member]
Business Acquisition, Percentage of Voting Interests Acquired				51.00%
Capitalized Software Costs [Member]
Capitalized Computer Software, Gross	1,500	1,200
Capitalized Computer Software, Amortization	1,200	1,200
Brand and Technology [Member] | Resource Plus, Inc [Member]
Finite-Lived Intangible Assets, Gross, Total			$ 1,200
Customer Contracts And Lists [Member]
Finite-Lived Intangible Assets, Gross, Total	3,543	3,362
Amortization of Intangible Assets	$ 400	$ 500
Customer Contracts And Lists [Member] | Minimum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	5 years
Customer Contracts And Lists [Member] | Maximum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	25 years