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Property, Plant, and Equipment (Tables) | 12 Months Ended
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Sep. 30, 2019
Property, Plant, and Equipment |
Schedule of Property Plant and Equipment, Net |
|  | September 30, |  | September 30,
|  | 2019 |  | 2018
Land and land improvements |  | $ | 94,976 |  | $ | 94,146
Buildings and building improvements |  |  | 587,541 |  |  | 565,065
Leasehold improvements |  |  | 17,446 |  |  | 17,954
Machinery and production equipment |  |  | 731,159 |  |  | 668,986
Computer equipment and software |  |  | 124,201 |  |  | 124,788
Office furniture and equipment |  |  | 39,934 |  |  | 31,533
Other |  |  | 19,346 |  |  | 19,366
Construction in progress |  |  | 57,624 |  |  | 103,036
|  |  | 1,672,227 |  |  | 1,624,874
Less accumulated depreciation |  |  | (613,452) |  |  | (564,869)
Property, plant, and equipment, net |  | $ | 1,058,775 |  | $ | 1,060,005
Schedule of Depreciation Expense |
|  | Year Ended September 30,
|  | 2019 |  | 2018 |  | 2017
Depreciation expense |  | $ | 85,982 |  | $ | 71,389 |  | $ | 55,140
Schedule of Capitalized Interest |
|  | Year Ended September 30,
|  | 2019 |  | 2018 |  | 2017
Capitalized interest |  | $ | 779 |  | $ | 2,187 |  | $ | 2,008

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