Note 6 - Credit Facility, Term Loans and Warrants (Tables)

9 Months Ended

Sep. 30, 2023

Notes Tables

Schedule of Debt [Table Text Block]

	December 31, 2022			September 30, 2023
MidCap Credit Facility	$	21,899		$	14,707
Less: deferred debt issuance costs		(459	)		(285	)
Less: discount associated with issuance of warrants		(387	)		(240	)
Total MidCap Credit Facility	$	21,053		$	14,182

Interest Income and Interest Expense Disclosure [Table Text Block]

	Three Months Ended September 30,					Nine Months Ended September 30,
	2022		2023			2022		2023
Interest expense	$	904	$	487		$	2,043	$	1,623
Interest income		—		(128	)		—		(547	)
Total interest expense, net	$	904	$	359		$	2,043	$	1,076