Note 6 - Fair Value Measurements (Tables)

3 Months Ended

Dec. 31, 2023

Notes Tables

Fair Value, Assets Measured on Recurring Basis [Table Text Block]

	December 31, 2023
	Cost Basis		Gross Unrealized Gain		Gross Unrealized Loss			Fair Value		Cash Equivalents		Short-term Securities		Long-term Securities
Level 1:
Money market funds	$	1,060	$	-	$	-		$	1,060	$	1,060	$	-	$	-
Level 2:
Certificates of deposit		302		-		-			302		-		302		-
U.S. government agency bonds		1,161		-		-			1,161		-		1,161		-
Municipal securities		3,707		4		(3	)		3,708		-		3,708		-
Corporate bonds		3,607		1		(2	)		3,606		-		3,606		-
Subtotal		8,777		5		(5	)		8,777		-		8,777		-
Total	$	9,837	$	5	$	(5	)	$	9,837	$	1,060	$	8,777	$	-

	September 30, 2023
	Cost Basis		Gross Unrealized Gain		Gross Unrealized Loss			Fair Value		Cash Equivalents		Short-term Securities		Long-term Securities
Level 1:
Money market funds	$	2,307	$	-	$	-		$	2,307	$	2,307	$	-	$	-
Level 2:
Certificates of deposit		301		-		-			301		-		301		-
Municipal securities		926		-		(7	)		919		-		919		-
Corporate bonds		264		-		(3	)		261		-		261		-
Subtotal		1,491		-		(10	)		1,481		-		1,481		-
Total	$	3,798	$	-	$	(10	)	$	3,788	$	2,307	$	1,481	$	-

Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block]

	As of December 31, 2023
	In loss position < 12 months					In loss position > 12 months					Total in loss position
	Fair Value		Gross Unrealized Loss			Fair Value		Gross Unrealized Loss			Fair Value		Gross Unrealized Loss
Certificates of deposit	$	-	$	-		$	-	$	-		$	-	$	-
U.S. government agency bonds		-		-			-		-			-		-
Municipal securities		628		(1	)		132		(2	)		760		(3	)
Corporate bonds		2,882		(2	)		-		-			2,882		(2	)
	$	3,510	$	(3	)	$	132	$	(2	)	$	3,642	$	(5	)

	As of September 30, 2023
	In loss position < 12 months					In loss position > 12 months					Total in loss position
	Fair Value		Gross Unrealized Loss			Fair Value		Gross Unrealized Loss			Fair Value		Gross Unrealized Loss
Certificates of deposit	$	-	$	-		$	-	$	-		$	-	$	-
U.S. government agency bonds		-		-			-		-			-		-
Municipal securities		684		(2	)		235		(5	)		919		(7	)
Corporate bonds		-		-			261		(3	)		261		(3	)
	$	684	$	(2	)	$	496	$	(8	)	$	1,180	$	(10	)

Business Combination, Fair Value Measurement of Acquired Intangible Assets [ Table Text Block]

			Fair Value Measurements at December 31, 2023
	Carrying Value		(Level 1)		(Level 2)		(Level 3)		Gain/(Loss)
Intangible assets from Evertel acquisition	$	2,550	$	-	$	-	$	2,550	$	-
Goodwill from Evertel acquisition	$	2,772	$	-	$	-	$	2,772	$	-

Fair Value, Liabilities Measured on Recurring and Nonrecurring Basis [Table Text Block]

Value at acquisition date	$	890
Remeasurement estimate		46
Balance as of December 31, 2023	$	936

Balance at acquisition date	$	230
Accretion		5
Balance as of December 31, 2023	$	235