Note 2 - Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2026

Notes Tables

Schedule of Available-for-Sale Securities Reconciliation [Table Text Block]

		*As of June 30, 2026*																*As of December 31, 2025*
						*Gross*				*Gross*				*Estimated*								*Gross*				*Gross*				*Estimated*
						*Unrealized*				*Unrealized*				*Fair*								*Unrealized*				*Unrealized*				*Fair*
		*Cost*				*Gains*				*Losses*				*Value*				*Cost*				*Gains*				*Losses*				*Value*
Cash and cash equivalents		$	1,891			$	-			$	-			$	1,891			$	1,914			$	-			$	-			$	1,914
U.S. Governmental agency obligations (unrealized position < 12 months)			-				-				-				-				298				6				-				304
U.S. Governmental agency obligations (unrealized position > 12 months)			30,074				18				(2,298	)			27,794				29,780				84				(2,195	)			27,669
		$	31,965			$	18			$	(2,298	)		$	29,685			$	31,992			$	90			$	(2,195	)		$	29,887

Investments Classified by Contractual Maturity Date [Table Text Block]

		*As of*
Maturities:		*June 30, 2026*
Less than one year		$	3,972
One to five years			16,453
Five to ten years			7,694
Greater than ten years			1,955
Total		$	30,074

Schedule of Escrow Deposits Sales by Year [Table Text Block]

		*Deposits as of*
Sales		*June 30,*				*December 31,*
Year		*2026*				*2025*
1999			123			$	130
2000			997				1,017
2001			1,673				1,673
2002			2,271				2,271
2003			4,249				4,249
2004			3,714				3,714
2005			4,553				4,553
2006			3,847				3,847
2007			4,167				4,167
2008			3,364				3,364
2009			1,619				1,619
2010			406				406
2011			193				193
2012			199				199
2013			173				173
2014			143				143
2015			101				101
2016			91				91
2017			82				82
Total		$	31,965			$	31,992