Note 2 - Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2023

Notes Tables

Schedule of Cash, Cash Equivalents and Restricted Cash [Table Text Block]

	December 31,
	2023		2022
Cash and cash equivalents	$	45,260	$	13,434
Restricted cash		-		1,142
Total cash, cash equivalents and restricted cash	$	45,260	$	14,576

Schedule of Weighted Average Number of Shares [Table Text Block]

	Years Ended December 31,
	2023		2022
Weighted average common shares outstanding–basic		11,461,399		10,673,017
Potentially dilutive securities:
Unvested shares of restricted stock and employee stock options		318,513		189,521
Weighted average common shares and common share equivalents outstanding–diluted		11,779,912		10,862,538
Average number of potentially dilutive securities excluded from calculation		140,079		478,024