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Fair Value Measurements Assets and Liabilities Measured on a Recurring Basis (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Total Fair Value - Recurring [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Assets, Fair Value Disclosure, Recurring | $ 172,040 | $ 154,410
Fair Value, Inputs - Quoted Prices in Active Markets for Identical Assets, Level 1 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Assets, Fair Value Disclosure, Recurring | 0 | 0
Fair Value, Significant Other observable Inputs, Level 2 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Assets, Fair Value Disclosure, Recurring | 172,040 | 154,410
Fair Value, Significant Unobservable Inputs, Level 3 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Assets, Fair Value Disclosure, Recurring | 0 | 0
Mortgage Loans Held for Sale [Member] | Total Fair Value - Recurring [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Assets, Fair Value Disclosure, Recurring | 171,580 | 154,020
Mortgage Loans Held for Sale [Member] | Fair Value, Inputs - Quoted Prices in Active Markets for Identical Assets, Level 1 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Assets, Fair Value Disclosure, Recurring | 0 | 0
Mortgage Loans Held for Sale [Member] | Fair Value, Significant Other observable Inputs, Level 2 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Assets, Fair Value Disclosure, Recurring | 171,580 | 154,020
Mortgage Loans Held for Sale [Member] | Fair Value, Significant Unobservable Inputs, Level 3 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Assets, Fair Value Disclosure, Recurring | 0 | 0
Forward Sales or Mortgage Backed Securities [Member] | Total Fair Value - Recurring [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Assets, Fair Value Disclosure, Recurring | 177 | 230
Forward Sales or Mortgage Backed Securities [Member] | Fair Value, Inputs - Quoted Prices in Active Markets for Identical Assets, Level 1 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Assets, Fair Value Disclosure, Recurring | 0 | 0
Forward Sales or Mortgage Backed Securities [Member] | Fair Value, Significant Other observable Inputs, Level 2 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Assets, Fair Value Disclosure, Recurring | 177 | 230
Forward Sales or Mortgage Backed Securities [Member] | Fair Value, Significant Unobservable Inputs, Level 3 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Assets, Fair Value Disclosure, Recurring | 0 | 0
Interest Rate Lock Commitments [Member] | Total Fair Value - Recurring [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Assets, Fair Value Disclosure, Recurring | 271 | 250
Interest Rate Lock Commitments [Member] | Fair Value, Inputs - Quoted Prices in Active Markets for Identical Assets, Level 1 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Assets, Fair Value Disclosure, Recurring | 0 | 0
Interest Rate Lock Commitments [Member] | Fair Value, Significant Other observable Inputs, Level 2 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Assets, Fair Value Disclosure, Recurring | 271 | 250
Interest Rate Lock Commitments [Member] | Fair Value, Significant Unobservable Inputs, Level 3 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Assets, Fair Value Disclosure, Recurring | 0 | 0
Best Efforts Contracts [Member] | Total Fair Value - Recurring [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Assets, Fair Value Disclosure, Recurring | 12 | (90)
Best Efforts Contracts [Member] | Fair Value, Inputs - Quoted Prices in Active Markets for Identical Assets, Level 1 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Assets, Fair Value Disclosure, Recurring | 0 | 0
Best Efforts Contracts [Member] | Fair Value, Significant Other observable Inputs, Level 2 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Assets, Fair Value Disclosure, Recurring | 12 | (90)
Best Efforts Contracts [Member] | Fair Value, Significant Unobservable Inputs, Level 3 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Assets, Fair Value Disclosure, Recurring | $ 0 | $ 0

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