LEASES - LEASE COST (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Leases [Abstract]
Operating lease cost	$ 2,366	$ 1,650	$ 5,811	$ 4,761
Amortization of right-of-use assets	640	1,274	3,077	3,734
Interest on lease liabilities	193	248	527	796
Total finance lease cost	833	1,522	3,604	4,530
Short-term lease cost	127	95	381	721
Variable lease cost	262	597	964	1,707
Total lease cost	$ 3,588	$ 3,864	$ 10,760	$ 11,719

Finance Lease, Cost

No definition available.

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- Definition

Amount of interest expense on finance lease liability.

+ References

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-SubTopic 20
-Section 50
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- Definition

Amount of amortization expense attributable to right-of-use asset from finance lease.

+ References

+ Details

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- Definition

Amount of lease cost recognized by lessee for lease contract.

+ References

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-Publisher FASB
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-SubTopic 20
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- References

No definition available.

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- Definition

Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
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- Definition

Amount of short-term lease cost, excluding expense for lease with term of one month or less.

+ References

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- Definition

Amount of variable lease cost, excluded from lease liability, recognized when obligation for payment is incurred for finance and operating leases.

+ References

+ Details

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