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

3 Months Ended

Mar. 31, 2022

Notes Tables

Cash, Cash Equivalents and Investments [Table Text Block]

	March 31, 2022		December 31, 2021
Cash	$	5,411	$	2,506
Cash equivalents (see detail in Note 4)		33,810		37,023
Restricted cash		220		557
Total cash and cash equivalents	$	39,441	$	40,086