Note 3 - Cash, Cash Equivalents and Restricted Cash (Tables)

6 Months Ended

Jun. 30, 2022

Notes Tables

Cash, Cash Equivalents and Investments [Table Text Block]

	June 30, 2022		December 31, 2021
Cash	$	5,463	$	2,506
Cash equivalents (see detail in Note 4)		32,161		37,023
Restricted cash		221		557
Total cash and cash equivalents	$	37,845	$	40,086