Note 4 - Fair Value of Financial Instruments

6 Months Ended

Mar. 31, 2024

Notes to Financial Statements

Fair Value Disclosures [Text Block]

4. Fair Value of Financial Instruments

The Company’s financial instruments generally include cash and cash equivalents, short-term investments, trade accounts and notes receivable and accounts payable. Due to the short-term maturities of cash and cash equivalents, trade accounts and notes receivable and accounts payable, the carrying amounts of these financial instruments are deemed to approximate their fair value on the respective balance sheet dates.   The Company measures its short-term investments at fair value on a recurring basis.

The following tables present the fair value of the Company’s short-term investments and contingent consideration by valuation hierarchy and input (in thousands):

	As of March 31, 2024
	Quoted Prices in		Significant
	Active Markets for		Other		Significant
	Identical Assets		Observable		Unobservable
	(Level 1)		(Level 2)		(Level 3)		Totals
Short-term investments:
Corporate bonds	$	—	$	21,923	$	—	$	21,923
U.S. treasury securities and securities of U.S. government-sponsored agency				8,525				8,525
Total assets	$	—	$	30,448	$	—	$	30,448

	As of September 30, 2023
	Quoted Prices in		Significant
	Active Markets for		Other		Significant
	Identical Assets		Observable		Unobservable
	(Level 1)		(Level 2)		(Level 3)		Totals
Short-term investments:
Corporate bonds	$	—	$	11,295	$	—	$	11,295
U.S. treasury securities and securities of U.S. government-sponsored agency		—		3,626		—		3,626
Total assets	$	—	$	14,921	$	—	$	14,921