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Subsequent Events: (Details) - Contracts - ASUS		6 Months Ended
	Jul. 12, 2016	Jun. 30, 2016
Subsequent Event [Line Items]
Period of fixed price contracts to operate and maintain the water and/or wastewater systems at various military bases		50 years
Subsequent Event
Subsequent Event [Line Items]
Period of fixed price contracts to operate and maintain the water and/or wastewater systems at various military bases	50 years
Period of transition to operate and maintain water systems at new military	10 months

X

- Definition

Represents the period of fixed price contracts to operate and maintain the water and/or wastewater systems at various military bases.

+ References

No definition available.

+ Details

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X

- Definition

Period of Transition to Operate and Maintain Water Systems at New Military Base

+ References

No definition available.

+ Details

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X

- 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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Period Type:	duration

X

- Details

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X

- Details

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Namespace Prefix:
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Period Type:

X

- Details

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