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Leases (Tables) | 6 Months Ended
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Mar. 31, 2020
Leases [Abstract] |
Lease Costs | Costs recorded in the three and six months ended March 31, 2020, are summarized below.
(dollars in thousands) |  | Three Months Ended March 31, 2020 |  | Six Months Ended March 31, 2020
Operating lease cost |  | $ | 23,437 |  |  | $ | 48,687 |
Short-term lease cost |  | 1,454 |  |  | 3,564 |
Variable lease cost |  | 1,954 |  |  | 5,288 |
Total operating lease costs |  | $ | 26,845 |  |  | $ | 57,539 |
Future Minimum Lease Payments | Future minimum lease payments for noncancelable operating leases as of March 31, 2020 are shown below.
(dollars in thousands) | Office space |  | Equipment |  | Total
For the years ended September 30, |  |  |  |  |
Remainder of 2020 | $ | 42,136 |  |  | $ | 3,832 |  |  | $ | 45,968 |
2021 | 60,372 |  |  | 6,295 |  |  | 66,667 |
2022 | 39,752 |  |  | 2,353 |  |  | 42,105 |
2023 | 26,490 |  |  | 98 |  |  | 26,588 |
2024 | 11,193 |  |  | 40 |  |  | 11,233 |
Thereafter | 6,989 |  |  | — |  |  | 6,989 |
Total minimum lease payments | $ | 186,932 |  |  | $ | 12,618 |  |  | $ | 199,550 |
Less imputed interest | (11,183) |  |  | (372) |  |  | (11,555) |
Total lease liabilities | $ | 175,749 |  |  | $ | 12,246 |  |  | $ | 187,995 |

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- Definition Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980 + Details
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- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980 + Details
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