Note 6 - Leases 1 (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2024

Dec. 31, 2023

Notes Tables

Lease, Cost [Table Text Block]

	Three months ended March 31,
	2024		2023
Operating lease cost	$	589	$	602
Variable lease cost		84		79
Total operating lease cost	$	673	$	681

	Twelve months ended December 31,
	2023		2022
Operating lease cost	$	2,379	$	2,382
Variable lease cost		340		241
Total operating lease cost	$	2,719	$	2,623

	Twelve months ended December 31,
	2023			2022
Cash paid for operating leases included in operating cash flows	$	(2,500	)	$	(1,341	)

Assets And Liabilities, Lessee [Table Text Block]

	As of December 31,
	2023		2022
Operating lease right-of-use assets	$	11,226	$	15,502
Operating lease liabilities:
Operating lease liabilities, current	$	2,415	$	2,455
Operating lease liabilities, non-current		14,858		16,681
Total operating lease liabilities	$	17,273	$	19,136

	As of December 31,
	2023			2022
Weighted average remaining lease term (in years)		7.89			9.26
Weighted average discount rate		5.32	%		5.35	%

Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]

	Operating leases
Years ending - December 31:	(Unaudited)
2024 (remaining nine months)	$	1,852
2025		2,484
2026		2,559
2027		2,636
2028		2,716
Thereafter		8,400
Total lease payments		20,647
Less amount to discount to present value		(3,771	)
Present value of lease liabilities	$	16,876

Years ending - December 31:
2024	$	2,474
2025		2,484
2026		2,559
2027		2,636
2028		2,716
Thereafter		8,400
Total lease payments		21,269
Less amount to discount to present value		(3,996	)
Present value of lease liabilities	$	17,273