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Note 13. Commitments And Contingencies Escrow and Trust Deposits (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Loss Contingencies [Line Items] |  |
Escrow and trust deposits | $ 469,000 | $ 415,000
Maximum |  |
Loss Contingencies [Line Items] |  |
Cash, FDIC Insured Amount | $ 250 |

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- Definition The aggregate amount of all domestic and foreign noninterest-bearing deposits liabilities held by the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.12) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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