Note 6 - Commitments and Contingencies (Tables)

6 Months Ended

Jun. 30, 2023

Notes Tables

Lease, Cost [Table Text Block]

	Three Months Ended June 30,				Six Months Ended June 30,
	2023		2022		2023		2022
Lease cost:
Operating lease cost	$	33	$	29	$	65	$	58
Variable lease cost		7		7		14		14
Total	$	40	$	36	$	79	$	72