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Lease Commitments | 12 Months Ended
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Sep. 30, 2017
Lease Commitments | 14) Lease Commitments The Company has entered into certain operating leases for office space, trucks and other equipment. The future minimum rental commitments at September 30, 2017 under operating leases having an initial or remaining non-cancelable term of one year or more are as follows (in thousands):
2018 |  |  | 19,502 |
2019 |  |  | 19,315 |
2020 |  |  | 17,284 |
2021 |  |  | 14,859 |
2022 |  |  | 11,282 |
Thereafter |  |  | 52,052 |
Total future minimum lease payments |  | $ | 134,294 |
Rent expense for the fiscal years ended September 30, 2017, 2016, and 2015, was $21.4 million, $19.7 million, and $18.4 million, respectively.

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- Definition The entire disclosure for lessee entity's leasing arrangements including, but not limited to, all of the following: (a.) The basis on which contingent rental payments are determined, (b.) The existence and terms of renewal or purchase options and escalation clauses, (c.) Restrictions imposed by lease agreements, such as those concerning dividends, additional debt, and further leasing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -URI http://asc.fasb.org/subtopic&trid=77888251 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -URI http://asc.fasb.org/topic&trid=2208923 + Details
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