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Fair Value of Financial Instruments (Financial instruments Measured at Fair Value) (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Securities available for sale: |  |
Securities available for sale | $ 343,270 | $ 199,329
Recurring [Member] | Quoted Prices in Market for Identical Assets (Level 1) [Member] |  |
Securities available for sale: |  |
Government-sponsored enterprise securities |  |
Mortgage-backed securities |  |
Corporate bonds |  |
Equity securities |  |
Securities available for sale |  |
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] |  |
Securities available for sale: |  |
Government-sponsored enterprise securities | 13,867 | 17,490
Mortgage-backed securities | 295,213 | 148,065
Corporate bonds | 34,190 | 33,600
Equity securities |  | 174
Securities available for sale | 343,270 | 199,329
Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Securities available for sale: |  |
Government-sponsored enterprise securities |  |
Mortgage-backed securities |  |
Corporate bonds |  |
Equity securities |  |
Securities available for sale |  |
Recurring [Member] | Fair Value [Member] |  |
Securities available for sale: |  |
Government-sponsored enterprise securities | 13,867 | 17,490
Mortgage-backed securities | 295,213 | 148,065
Corporate bonds | 34,190 | 33,600
Equity securities |  | 174
Securities available for sale | 343,270 | 199,329
Nonrecurring [Member] | Quoted Prices in Market for Identical Assets (Level 1) [Member] |  |
Securities available for sale: |  |
Impaired loans |  |
Foreclosed real estate |  |
Nonrecurring [Member] | Significant Other Observable Inputs (Level 2) [Member] |  |
Securities available for sale: |  |
Impaired loans |  |
Foreclosed real estate |  |
Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Securities available for sale: |  |
Impaired loans | 14,086 | 12,284
Foreclosed real estate | 12,571 | 9,532
Nonrecurring [Member] | Fair Value [Member] |  |
Securities available for sale: |  |
Impaired loans | 14,086 | 12,284
Foreclosed real estate | $ 12,571 | $ 9,532

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- Definition Fair value of government sponsored enterprise securities. + References No definition available. + Details
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- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=75030427&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=82896770&loc=d3e26610-111562 + Details
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