Goodwill and Other Intangible Assets - Summary of Acquired Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Acquired Finite Lived Intangible Assets [Line Items]
Acquired intangible assets, Cost	$ 5,634	$ 5,604
Acquired intangible assets, Accumulated Amortization	(5,595)	(5,559)
Acquired intangible assets, Net	39us-gaap_FiniteLivedIntangibleAssetsNet	45us-gaap_FiniteLivedIntangibleAssetsNet
Customer Relationships
Acquired Finite Lived Intangible Assets [Line Items]
Acquired intangible assets, Cost	2,739	2,743
Acquired intangible assets, Accumulated Amortization	(2,739)	(2,727)
Acquired intangible assets, Net		16
Lead Provider Relationships
Acquired Finite Lived Intangible Assets [Line Items]
Acquired intangible assets, Cost	2,489	2,489
Acquired intangible assets, Accumulated Amortization	(2,489)	(2,489)
Trademarks
Acquired Finite Lived Intangible Assets [Line Items]
Acquired intangible assets, Cost	406	372
Acquired intangible assets, Accumulated Amortization	(367)	(343)
Acquired intangible assets, Net	$ 39	$ 29

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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=26713463&loc=d3e16323-109275

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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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