Represents Consideration transferred to Shareholders on account of Business combination

No definition available.

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Data Type:	xbrli:monetaryItemType
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- Definition

Represents the period with in which either the party can exercise the right to terminate contract.

+ References

No definition available.

+ Details

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- Definition

Represents the extension period to obtain certain required regulatory approvals.

+ References

No definition available.

+ Details

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- Definition

Represents the percentage payable on the transaction costs.

+ References

No definition available.

+ Details

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Namespace Prefix:	ede_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount payable on cancellation of merger either due to non approval from shareholders or government authorities.

+ References

No definition available.

+ Details

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Namespace Prefix:	ede_
Data Type:	xbrli:monetaryItemType
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- Definition

Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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- Details

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- Details

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- Details

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- Details

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- Details

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SUBSEQUENT EVENT - AGREEMENT AND PLAN OF MERGER (Details) - USD ($)	Feb. 09, 2016	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2015
Subsequent event
Transaction costs				$ 200,000
Subsequent event
Subsequent event
Termination fee	$ 53,000,000
Subsequent event \| Liberty Utilities (Central) Co
Subsequent event
Righ to receive in cash without interest	$ 34.00
Maximum period for extending regulatory approvals	6 months
Maximum period for exercising termination right	9 months
Forecast
Subsequent event
Transaction costs			$ 4,500,000
Percentage payable of transaction costs		50.00%
Forecast \| High end of range
Subsequent event
Transaction costs		$ 17,000,000
Forecast \| Low end of range
Subsequent event
Transaction costs		$ 15,000,000
Liberty Utilities (Central) Co \| Subsequent event
Subsequent event
Termination fee	$ 65,000,000