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Cash, Cash Equivalents and Marketable Securities
12 Months Ended
Sep. 30, 2021
Cash and Cash Equivalents [Abstract]  
Cash, Cash Equivalents and Marketable Securities Cash, Cash Equivalents and Marketable Securities
The following is a summary of cash, cash equivalents and marketable securities at September 30, 2021 and 2020: 
 September 30, 2021September 30, 2020
 Amortized
Cost
Fair ValueAmortized
Cost
Fair Value
 (In thousands)
Cash and Cash Equivalents:
Cash$195,160 $195,160 $122,119 $122,119 
Money market funds194 194 35,275 35,275 
Total$195,354 $195,354 $157,394 $157,394 
Long-term Marketable Securities:
Marketable securities$23,836 $31,884 $20,195 $25,513 

The assets included in marketable securities represent long-term marketable equity 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. These investments are treated as trading securities and recorded at fair value.