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Securities (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2016 | Dec. 31, 2015
Summary of amortized cost and approximate fair values of securities |  |
Amortized Cost | $ 96,026 | $ 88,805
Gross Unrealized Gains | 2,013 | 1,411
Gross Unrealized Losses | (49) | (427)
Fair Value | 97,990 | 89,789
U.S. Treasury and Government agencies [Member] |  |
Summary of amortized cost and approximate fair values of securities |  |
Amortized Cost | 11,917 | 10,804
Gross Unrealized Gains | $ 145 | $ 101
Gross Unrealized Losses |  |
Fair Value | $ 12,062 | $ 10,905
Mortgage-backed securities [Member] |  |
Summary of amortized cost and approximate fair values of securities |  |
Amortized Cost | 68,486 | 61,459
Gross Unrealized Gains | 896 | 311
Gross Unrealized Losses | (44) | (427)
Fair Value | 69,338 | 61,343
State and political subdivisions [Member] |  |
Summary of amortized cost and approximate fair values of securities |  |
Amortized Cost | 15,600 | 16,519
Gross Unrealized Gains | 972 | $ 999
Gross Unrealized Losses | (5) |
Fair Value | 16,567 | $ 17,518
Equity securities [Member] |  |
Summary of amortized cost and approximate fair values of securities |  |
Amortized Cost | $ 23 | $ 23
Gross Unrealized Gains |  |
Gross Unrealized Losses |  |
Fair Value | $ 23 | $ 23

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- Definition Amount of investment in debt and equity securities categorized neither as trading securities nor held-to-maturity securities and intended be sold or mature one year or operating cycle, if longer. + 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=65884222&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=66010992&loc=d3e26626-111562 + Details
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