FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)

9 Months Ended

Jun. 30, 2020

Fair Value Disclosures [Abstract]

Fair value of financial instruments

The following table presents financial instruments, other than debt, that we measured at fair value on a recurring basis at June 30, 2020 and September 30, 2019.  See Note 10 of this Report on Form 10-Q for a discussion of our debt. We have classified the following assets and liabilities in accordance with the fair value hierarchy set forth in the applicable standards.  In instances where the inputs used to measure the fair value of an asset fall into more than one level of the hierarchy, we have classified them based on the lowest-level input that is significant to the determination of the fair value. 

June 30, 2020	Level 1		Level 2		Level 3		Total Fair Value
Assets:
Cash and cash equivalents	$	354,708	$	—	$	—	$	354,708
Other long-term investments	1,147		—		—		1,147
Total assets	$	355,855	$	—	$	—	$	355,855
Liabilities:
Derivative financial instruments	—		41,692		—		41,692
Total liabilities	$	—	$	41,692	$	—	$	41,692

September 30, 2019	Level 1		Level 2		Level 3		Total Fair Value
Assets:
Cash and cash equivalents	$	188,495	$	—	$	—	$	188,495
Other long-term investments	980		—		—		980
Total assets	$	189,475	$	—	$	—	$	189,475
Liabilities:
Derivative financial instruments	—		24,244		—		24,244
Total liabilities	$	—	$	24,244	$	—	$	24,244