The Company classifies its short-term investments as available-for-sale securities. Available-for-sale securities are carried at fair market value with net unrealized gains and losses reported as a component of accumulated other comprehensive loss in stockholders’ equity. For the fiscal years ended September 30, 2022 and 2021, the Company realized losses of $22,000 and $4,000, respectively, from the sale of short-term investments.

The Company’s short-term investments were composed of the following (in thousands):


	AS OF SEPTEMBER 30, 2022
	Amortized Cost		Unrealized Gains		Unrealized Losses			Estimated Fair Value
Short-term investments:
Corporate bonds	$	909	$	—	$	(15	)	$	894
Total	$	909	$	—	$	(15	)	$	894


	AS OF SEPTEMBER 30, 2021
	Amortized Cost		Unrealized Gains		Unrealized Losses			Estimated Fair Value
Short-term investments:
Corporate bonds	$	9,511	$	—	$	(15	)	$	9,496
Total	$	9,511	$	—	$	(15	)	$	9,496

The Company’s short-term investments have contractual maturities ranging from February 2023 to March 2023.

During the fiscal year ended September 30, 2021, the Company recognized a gain of $2.0 million in connection with the sale of its interest in a senior secured bond originally issued from an international seismic marine customer.