Note 3 - Cash and Investments

12 Months Ended

Dec. 31, 2021

Notes to Financial Statements

Cash, Cash Equivalents, and Short-term Investments [Text Block]

3. Cash and Investments 

Cash, cash equivalents and restricted cash consisted of the following (in thousands):  

	December 31,
	2021		2020
Cash	$	2,506	$	6,509
Cash equivalents (see detail in Note 4)		37,023		6,114
Restricted cash		557		337
Total cash, cash equivalents and restricted cash as presented in the consolidated statement of cash flows	$	40,086	$	12,960