Fair Value Measurements (Tables)

3 Months Ended

Dec. 31, 2021

Fair Value Disclosures [Abstract]

Financial Assets Measured on a Recurring Basis

The following tables represent financial assets that we measured at fair value on a recurring basis at December 31, 2021 and September 30, 2021:

December 31, 2021	Active Markets for Identical Instruments (Level 1)		Fair Value as of December 31, 2021
	(In thousands)
Assets:
Cash equivalents (1)	$	194	$	194
Marketable securities (2)	33,926		33,926
Total	$	34,120	$	34,120
September 30, 2021	Active Markets for Identical Instruments (Level 1)		Fair Value as of September 30, 2021
	(In thousands)
Assets:
Cash equivalents (1)	$	194	$	194
Marketable securities (2)	31,884		31,884
Total	$	32,078	$	32,078

(1)Included in cash and cash equivalents on our condensed consolidated balance sheets at December 31, 2021 and September 30, 2021. Not included in these tables are cash deposits of $162.0 million and $195.2 million at December 31, 2021 and September 30, 2021, respectively.

(2)Represents securities held under a supplemental retirement and savings plan for certain officers and senior management employees, which are distributed upon termination or retirement of the employees. Included in marketable securities on our condensed consolidated balance sheets at December 31, 2021 and September 30, 2021.