Note 10 - Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2022

Notes Tables

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

	Foreign Currency Translation Adjustments			Unrealized Gains (Losses) on Available-For-Sale Investments			Total
Balance, December 31, 2021	$	(474	)	$	(18	)	$	(492	)
Other comprehensive income (loss)		(514	)		2			(512	)
Balance, December 31, 2022	$	(988	)	$	(16	)	$	(1,004	)