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Leases (Tables)
 12 Months Ended
Sep. 30, 2021
Leases [Abstract]  
Lease, cost
The components of lease expense are:
September 30,
20212020
(in thousands)
Finance lease – lease asset amortization$54 $69 
Finance lease – interest on lease liabilities22 23 
Operating lease cost5,139 5,264 
Operating lease impairment expense 172 — 
Short-term lease cost242 125 
Variable lease cost (1)
1,532 1,463 
Sublease income(184)(258)
Total net lease cost$6,977 $6,686 
(1) Variable lease costs primarily relate to the Company's election to combine non-lease components such as common area maintenance, insurance and taxes related to its real estate leases. To a lesser extent, the Company's equipment leases have variable costs associated with usage and subsequent changes to costs based upon an index.
Supplemental disclosures of cash flow information related to leases are:
(in thousands)Year Ended September 30,
20212020
Cash paid for amounts included in operating lease liabilities$4,319 $4,771 
Cash paid for amounts included in finance lease liabilities 42 34 
Non-cash: lease liabilities arising from new operating lease assets obtained (1)
3,349 12,190 
Non-cash: lease liabilities arising from new finance lease assets obtained 137 10 
Non-cash: adjustments to lease assets and liabilities 3,756 3,942 
(1) Year ended September 30, 2020 amount includes $12.2 million of lease liabilities recognized upon the adoption of ASC 842 on October 1, 2019 (see Note 2).
Lessee, operating lease, liability, maturity Maturities of lease liabilities are:
September 30, 2021
(in thousands)Operating LeasesFinance Leases
2022$4,882 $78 
20234,145 79 
20243,076 59 
20242,445 30 
20251,441 30 
Thereafter212 12 
Total lease payments (1)
$16,201 $288 
Less: imputed interest (2)
(1,855)(38)
Total lease liabilities$14,346 $250 


(1) The weighted average remaining lease term is 3.7 years for operating leases and 4.1 years for finance leases.
(2) The weighted average discount rate is 6.5% for operating leases and 6.7% for finance leases.
Finance lease, liability, fiscal year maturity Maturities of lease liabilities are:
September 30, 2021
(in thousands)Operating LeasesFinance Leases
2022$4,882 $78 
20234,145 79 
20243,076 59 
20242,445 30 
20251,441 30 
Thereafter212 12 
Total lease payments (1)
$16,201 $288 
Less: imputed interest (2)
(1,855)(38)
Total lease liabilities$14,346 $250 


(1) The weighted average remaining lease term is 3.7 years for operating leases and 4.1 years for finance leases.
(2) The weighted average discount rate is 6.5% for operating leases and 6.7% for finance leases.