Note 2 - Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2024

Notes Tables

Debt Securities, Held-to-Maturity [Table Text Block]

	As of
Held-to-maturity debt securities:	September 30, 2024			December 31, 2023
Amortized cost	$	19,043		$	15,800
Gross unrecognized gains		115			—
Gross unrecognized losses		(12	)		(86	)
Fair value	$	19,146		$	15,714

Investments Classified by Contractual Maturity Date [Table Text Block]

	Amortized Cost		Fair Value
Within one year	$	8,162	$	8,160
After one year through two years		10,881		10,986
Total	$	19,043	$	19,146

Financing Receivable, Allowance for Credit Loss [Table Text Block]

At January 1, 2023	$	110
Provision charged to expense		24
(Write-offs) / Recoveries		(23	)
At December 31, 2023	$	111
Provision charged to expense		—
(Write-offs) / Recoveries		(5	)
At September 30, 2024	$	106