Amount before accumulated amortization of capitalized costs for computer software, including but not limited to, acquired and internally developed computer software.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 985

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756

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- Definition

Gross carrying amount before accumulated amortization as of the balance sheet date to an asset acquired in a business combination representing a favorable existing relationship with customers having a finite beneficial life.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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- Definition

Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Gross carrying amount before accumulated amortization as of the balance sheet date of intangible assets not otherwise specified in the taxonomy having a reasonably expected period of economic benefit.

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Summary Of Significant Accounting Policies (Accumulated Amortization Of Other Intangibles) (Details) (USD $) In Thousands, unless otherwise specified								12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014 Ecova [Member]	Dec. 31, 2013 Ecova [Member]	Dec. 31, 2013 Other Intangible Assets [Member]	Dec. 31, 2013 Customer Relationships [Member]	Dec. 31, 2013 Software and Software Development Costs [Member]	Dec. 31, 2013 Minimum [Member] Other Intangible Assets [Member]	Dec. 31, 2013 Minimum [Member] Customer Relationships [Member]	Dec. 31, 2013 Minimum [Member] Software and Software Development Costs [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life								1 year	2 years	3 years
Client relationships		$ 33,562
Software development costs		39,327
Other		3,321
Total intangible assets		76,210
Total accumulated amortization	0	(36,634)			(2,437)	(12,336)	(21,861)
Total intangible assets - net	$ 0	$ 39,576	$ 0	$ 39,576