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Summary of Significant Accounting Policies (General) (Details)	Dec. 31, 2016 mi²
General [Abstract]
Area of Services, in Square Miles	10,000

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- Definition

Area of services in square miles.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	instant

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- Definition

General [Abstract]

+ References

No definition available.

+ Details

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