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Segment Reporting (Details) $ in Thousands | 3 Months Ended |
--- | --- | ---
Dec. 31, 2017 USD ($) segment | Dec. 31, 2016 USD ($) | Sep. 30, 2017 USD ($)
Segment Reporting |  |  |
Number of reportable business segments | segment | 1 |  |
Revenues: |  |  |
Management services | $ 48,570 | $ 42,727 |
Incentive business management fees | 155,881 | 52,407 |
Reimbursable payroll related and other costs | 12,708 | 9,150 |
Advisory services | 1,382 | 1,010 |
Total revenues | 218,541 | 105,294 |
Expenses: |  |  |
Compensation and benefits | 28,918 | 23,232 |
General and administrative | 6,706 | 5,841 |
Transaction and acquisition related costs | 142 | 0 |
Depreciation and amortization | 380 | 555 |
Total expenses | 36,146 | 29,628 |
Operating income | 182,395 | 75,666 |
Interest and other income | 784 | 207 |
Tax receivable agreement remeasurement | 24,710 | 0 |
Income before income tax expense and equity in earnings (losses) of investee | 207,889 | 75,873 |
Income tax expense | (48,343) | (15,673) |
Equity in earnings (losses) of investees | (222) | 0 |
Net income (loss) | 159,324 | 60,200 |
Total Assets | 529,787 | 392,667 | $ 383,719
Intersegment Eliminations |  |  |
Revenues: |  |  |
Total revenues | 988 | 531 |
RMR LLC |  |  |
Revenues: |  |  |
Management services | 48,570 | 42,727 |
Incentive business management fees | 155,881 | 52,407 |
Reimbursable payroll related and other costs | 12,089 | 9,150 |
Advisory services | 0 | 0 |
Total revenues | 216,540 | 104,284 |
Expenses: |  |  |
Compensation and benefits | 27,455 | 22,688 |
General and administrative | 5,656 | 5,690 |
Transaction and acquisition related costs | 0 |  |
Depreciation and amortization | 358 | 369 |
Total expenses | 33,469 | 28,747 |
Operating income | 183,071 | 75,537 |
Interest and other income | 726 | 99 |
Tax receivable agreement remeasurement | 0 |  |
Income before income tax expense and equity in earnings (losses) of investee | 183,797 | 75,636 |
Income tax expense | 0 | 0 |
Equity in earnings (losses) of investees | 0 |  |
Net income (loss) | 183,797 | 75,636 |
Total Assets | 460,121 | 335,383 |
All Other Operations |  |  |
Revenues: |  |  |
Management services | 0 | 0 |
Incentive business management fees | 0 | 0 |
Reimbursable payroll related and other costs | 619 | 0 |
Advisory services | 1,382 | 1,010 |
Total revenues | 2,001 | 1,010 |
Expenses: |  |  |
Compensation and benefits | 1,463 | 544 |
General and administrative | 1,050 | 151 |
Transaction and acquisition related costs | 142 |  |
Depreciation and amortization | 22 | 186 |
Total expenses | 2,677 | 881 |
Operating income | (676) | 129 |
Interest and other income | 58 | 108 |
Tax receivable agreement remeasurement | 24,710 |  |
Income before income tax expense and equity in earnings (losses) of investee | 24,092 | 237 |
Income tax expense | (48,343) | (15,673) |
Equity in earnings (losses) of investees | (222) |  |
Net income (loss) | (24,473) | (15,436) |
Total Assets | $ 69,666 | $ 57,284 |

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