Captive Insurance Collateral (Tables)

12 Months Ended

Sep. 30, 2021

Investments Debt And Equity Securities [Abstract]

Schedule of Captive Insurance Collateral to be Available-for-sale Investments

          The Company considers all of its captive insurance collateral to be Level 1 available-for-sale investments. Investments at September 30, 2021 consist of the following (in thousands):

	Amortized Cost		Gross Unrealized Gain		Gross Unrealized (Loss)			Fair Value
Cash and Receivables	$	515	$	—	$	—		$	515
U.S. Government Sponsored Agencies		51,632		108		(53	)		51,687
Corporate Debt Securities		16,302		918		(18	)		17,202
Foreign Bonds and Notes		502		27		—			529
Total	$	68,951	$	1,053	$	(71	)	$	69,933

Investments at September 30, 2020 consist of the following (in thousands):

	Amortized Cost		Gross Unrealized Gain		Gross Unrealized (Loss)			Fair Value
Cash and Receivables	$	1,152	$	—	$	—		$	1,152
U.S. Government Sponsored Agencies		42,032		229		(26	)		42,235
Corporate Debt Securities		21,666		1,660		—			23,326
Foreign Bonds and Notes		2,992		82		—			3,074
Total	$	67,842	$	1,971	$	(26	)	$	69,787

Schedule of Maturities of Investments

         Maturities of investments were as follows at September 30, 2021 (in thousands):

	Net Carrying Amount
Due within one year	$	4,035
Due after one year through five years		65,354
Due after five years through ten years		544
Total	$	69,933