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DERIVATIVE INSTRUMENTS - BROKER MARGIN DEPOSITS (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Sep. 30, 2018
--- | --- | ---
Natural Gas Distribution |  |
Derivative [Line Items] |  |
Broker margin - Current assets | $ 0 | $ 2,038
Broker margin - Current liabilities | (757) | 0
Energy Services |  |
Derivative [Line Items] |  |
Broker margin - Current assets | $ 85,784 | $ 51,681

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- Definition Amount of other payables due to broker-dealers or clearing organizations. + References No definition available. + Details
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- Details
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- Details
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