Gross carrying amount before accumulated amortization as of the balance sheet date of capitalized costs to ready software for sale or licensing, or for long-term internal use.

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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

+ Details

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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite 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=7658586&loc=d3e16323-109275

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 45

-Subparagraph a(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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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.

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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											6 Months Ended
	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2013 Ecova [Member]	Dec. 31, 2012 Ecova [Member]	Jun. 30, 2013 Other Intangible Assets [Member]	Dec. 31, 2012 Other Intangible Assets [Member]	Jun. 30, 2013 Customer Relationships [Member]	Dec. 31, 2012 Customer Relationships [Member]	Jun. 30, 2013 Software and Software Development Costs [Member]	Dec. 31, 2012 Software and Software Development Costs [Member]	Jun. 30, 2013 Minimum [Member] Other Intangible Assets [Member]	Jun. 30, 2013 Minimum [Member] Customer Relationships [Member]	Jun. 30, 2013 Minimum [Member] Software and Software Development Costs [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life											1 year	6 years	3 years
Client relationships	$ 33,559	$ 32,059
Software development costs	36,815	33,990
Other	3,343	6,237
Total intangible assets	73,717	72,286
Total accumulated amortization	(31,260)	(26,030)			(2,059)	(1,680)	(10,177)	(7,793)	(19,024)	(16,557)
Total intangible assets - net	$ 42,457	$ 46,256	$ 41,700	$ 45,400