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Segment Information - Schedule of Information by Business Segment (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Mar. 31, 2016 | Mar. 31, 2015 | Mar. 31, 2016 | Mar. 31, 2015 | Sep. 30, 2015
Revenues: |  |  |  |  |
Total revenues | $ 71,889 | $ 60,012 | $ 92,493 | $ 79,082 |
Operating expenses: |  |  |  |  |
Total operating expenses | 52,374 | 48,336 | 71,612 | 64,134 |
Gross profit: |  |  |  |  |
Total gross profit | 19,515 | 11,676 | 20,881 | 14,948 |
Depreciation, depletion and amortization: |  |  |  |  |
Total depreciation, depletion and amortization | 4,036 | 3,505 | 8,044 | 6,489 |
Assets: |  |  |  |  |
Total Assets | 463,852 |  | 463,852 |  | $ 460,088
Operating Segments |  |  |  |  |
Revenues: |  |  |  |  |
Total revenues | 71,889 | 60,012 | 92,493 | 79,082 |
Operating expenses: |  |  |  |  |
Total operating expenses | 52,374 | 48,336 | 71,612 | 64,134 |
Gross profit: |  |  |  |  |
Total gross profit | 19,515 | 11,676 | 20,881 | 14,948 |
Other Depreciation, Depletion and Amortization |  |  |  |  |
Depreciation, depletion and amortization: |  |  |  |  |
Total depreciation, depletion and amortization | 254 | (159) | 567 | 508 |
Other Corporate Assets |  |  |  |  |
Assets: |  |  |  |  |
Total Assets | 10,008 |  | 10,008 |  | 22,512
Orange Co. | Operating Segments |  |  |  |  |
Revenues: |  |  |  |  |
Total revenues | 70,982 | 58,557 | 90,277 | 75,550 |
Operating expenses: |  |  |  |  |
Total operating expenses | 51,716 | 46,383 | 69,324 | 60,597 |
Gross profit: |  |  |  |  |
Total gross profit | 19,266 | 12,174 | 20,953 | 14,953 |
Depreciation, depletion and amortization: |  |  |  |  |
Total depreciation, depletion and amortization | 3,391 | 3,152 | 6,748 | 5,098 |
Assets: |  |  |  |  |
Total Assets | 418,191 |  | 418,191 |  | 392,329
Conservation and Environmental Resources | Operating Segments |  |  |  |  |
Revenues: |  |  |  |  |
Total revenues | 644 | 309 | 1,651 | 1,145 |
Operating expenses: |  |  |  |  |
Total operating expenses | 581 | 623 | 2,141 | 1,368 |
Gross profit: |  |  |  |  |
Total gross profit | 63 | (314) | (490) | (223) |
Depreciation, depletion and amortization: |  |  |  |  |
Total depreciation, depletion and amortization | 297 | 242 | 529 | 485 |
Assets: |  |  |  |  |
Total Assets | 14,418 |  | 14,418 |  | 13,779
Other Operations | Operating Segments |  |  |  |  |
Revenues: |  |  |  |  |
Total revenues | 263 | 1,146 | 565 | 2,387 |
Operating expenses: |  |  |  |  |
Total operating expenses | 77 | 1,330 | 147 | 2,169 |
Gross profit: |  |  |  |  |
Total gross profit | 186 | (184) | 418 | 218 |
Depreciation, depletion and amortization: |  |  |  |  |
Total depreciation, depletion and amortization | 94 | $ 270 | 200 | $ 398 |
Assets: |  |  |  |  |
Total Assets | $ 21,235 |  | $ 21,235 |  | $ 31,468

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