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Commitments and Contingencies - Commitments Narrative (Details) - USD ($) | Dec. 31, 2016 | Dec. 31, 2015
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Commitments and Contingencies Disclosure [Abstract] |  |
Maximum potential funding under commitments | $ 95,000,000 | $ 104,000,000

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- Definition Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248 + Details
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