Restricted Investments (Tables)

6 Months Ended

Mar. 31, 2023

Investments, Debt and Equity Securities [Abstract]

Summary of Debt Securities

The following is a summary of the Company’s debt securities as of March 31, 2023 and September 30, 2022 (in thousands):

	March 31, 2023
	(unaudited)
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Corporate debt securities	$	3,904	$	—	$	188	$	3,716
U.S. government securities	5,724		—		98		5,626
Municipal government securities	1,148		—		76		1,072
Agency backed securities	944		—		55		889
Total	$	11,720	$	—	$	417	$	11,303

	September 30, 2022
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Corporate debt securities	$	2,797	$	—	$	260	$	2,537
U.S. government securities	2,622		—		141		2,481
Municipal government securities	1,151		—		96		1,055
Agency backed securities	862		—		69		793
Total	$	7,432	$	—	$	566	$	6,866

The amortized cost and fair value of debt securities classified as available for sale by contractual maturity, as of March 31, 2023, were as follows (unaudited, in thousands):

	Amortized Cost		Fair Value
Due within one year	$	3,082	$	3,070
Due after one year through three years	2,820		2,721
Due after three years	5,818		5,512
Total	$	11,720	$	11,303