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Summary of Significant Accounting Policies (Restricted Cash Narrative) (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
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Summary Of Significant Accounting Policies Restricted Cash Narrative Details |  |
Restricted cash | $ 435 | $ 435

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- Definition Cash and equivalents whose use in whole or in part is restricted for the long-term, generally by contractual agreements or regulatory requirements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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