| Goodwill and Intangible Assets Goodwill (Details) - USD ($) $ in Thousands | Sep. 30, 2015 | Dec. 31, 2014 | 
|---|---|---|
| Goodwill [Line Items] | ||
| Goodwill (Note 3) | $ 6,708 | $ 0 | 
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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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| X | ||||||||||
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available. 
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