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REVENUE - TIMING OF REVENUE RECOGNITION - BALANCE SHEET (Details) - USD ($) $ in Thousands | Mar. 31, 2019 | Sep. 30, 2018
--- | --- | ---
Customer accounts receivable |  |
Billed | $ 273,924 | $ 205,490
Unbilled revenues | 42,850 | 7,199
Customers' credit | (18,162) | $ (27,325)
Customers accounts receivables & Customers' credit balances and deposits | 298,612 |
Operating Segments | Natural Gas Distribution |  |
Customer accounts receivable |  |
Billed | 113,472 |
Unbilled revenues | 42,850 |
Customers' credit | (18,159) |
Customers accounts receivables & Customers' credit balances and deposits | 138,163 |
Operating Segments | Clean Energy Ventures |  |
Customer accounts receivable |  |
Billed | 2,557 |
Unbilled revenues | 0 |
Customers' credit | 0 |
Customers accounts receivables & Customers' credit balances and deposits | 2,557 |
Operating Segments | Energy Services |  |
Customer accounts receivable |  |
Billed | 156,349 |
Unbilled revenues | 0 |
Customers' credit | 0 |
Customers accounts receivables & Customers' credit balances and deposits | 156,349 |
Home Services and Other |  |
Customer accounts receivable |  |
Billed | 2,344 |
Unbilled revenues | 0 |
Customers' credit | (3) |
Customers accounts receivables & Customers' credit balances and deposits | 2,341 |
Eliminations |  |
Customer accounts receivable |  |
Billed | 798 |
Unbilled revenues | 0 |
Customers' credit | 0 |
Customers accounts receivables & Customers' credit balances and deposits | $ 798 |

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