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Long-Term Debt and Lines of Credit - Schedule of Interest Costs Expensed and Capitalized (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2019 | Mar. 31, 2018 | Mar. 31, 2019 | Mar. 31, 2018
Debt Disclosure [Abstract] |  |  |  |
Interest expense | $ 1,963 | $ 2,239 | $ 3,880 | $ 4,494
Interest capitalized | 229 | 147 | 445 | 281
Total | $ 2,192 | $ 2,386 | $ 4,325 | $ 4,775

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