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Securities (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Schedule of Available-for-sale Securities [Line Items] |  |
Cost Basis | $ 235,903 | $ 231,251
Gross Unrealized Gains | 2,587 | 5,008
Gross Unrealized Losses | (4,865) | (2,909)
Estimated Fair Value | 233,625 | 233,350
U.S. government sponsored entities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cost Basis | 16,643 | 17,496
Gross Unrealized Gains | 0 | 1
Gross Unrealized Losses | (369) | (66)
Estimated Fair Value | 16,274 | 17,431
Collateralized mortgage obligations and residential mortgage-backed securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cost Basis | 118,807 | 118,628
Gross Unrealized Gains | 441 | 1,021
Gross Unrealized Losses | (1,273) | (476)
Estimated Fair Value | 117,975 | 119,173
Collateralized Debt Obligations [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cost Basis | 4,989 | 5,096
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (2,580) | (2,362)
Estimated Fair Value | 2,409 | 2,734
Money market fund [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cost Basis | 222 | 525
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 0 | 0
Estimated Fair Value | 222 | 525
Municipal securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cost Basis | 95,242 | 89,506
Gross Unrealized Gains | 2,146 | 3,986
Gross Unrealized Losses | (643) | (5)
Estimated Fair Value | $ 96,745 | $ 93,487

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- Definition This item represents the cost of debt securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27161-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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