Note 7 - Loan Payable (Tables)

3 Months Ended

Mar. 31, 2024

Notes Tables

Schedule of Debt [Table Text Block]

	March 31,			December 31,
(in thousands)	2024			2023
Loan payable	$	95,000		$	95,000
Add: Accreted Liability of final payment fee		10,799			10,230
		105,799			105,230
Less: unamortized debt issuance costs		(4,473	)		(5,112	)
		101,326			100,118
Less: principal payments		—			—
Total loan payable		101,326			100,118
Less: current portion		—			—
Loan payable non-current	$	101,326		$	100,118

Warrant [Member]

Notes Tables

Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]

	Amended Term Loan
Exercise price	$	14.70
Common share price on date of issuance	$	15.04
Volatility		0.88	%
Risk-free interest rate		3.6	%
Expected dividend yield		—	%
Contractual term (in years)		7.00