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Securities (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2015 | Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items] |  |
Cost Basis | $ 230,086 | $ 217,671
Gross Unrealized Gains | 5,367 | 5,621
Gross Unrealized Losses | (2,581) | (3,239)
Estimated Fair Value | 232,872 | 220,053
U.S. government sponsored entities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cost Basis | 16,249 | 13,000
Gross Unrealized Gains | 18 | 2
Gross Unrealized Losses | (7) | (133)
Estimated Fair Value | 16,260 | 12,869
Collateralized mortgage obligations and residential mortgage-backed securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cost Basis | 117,341 | 116,088
Gross Unrealized Gains | 2,092 | 1,870
Gross Unrealized Losses | (170) | (384)
Estimated Fair Value | 119,263 | 117,574
Collateralized Debt Obligations [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cost Basis | 5,096 | 5,141
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (2,298) | (2,709)
Estimated Fair Value | 2,798 | 2,432
Money market fund [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cost Basis | 1,222 | 6,453
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 0 | 0
Estimated Fair Value | 1,222 | 6,453
Municipal securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Cost Basis | 90,178 | 76,989
Gross Unrealized Gains | 3,257 | 3,749
Gross Unrealized Losses | (106) | (13)
Estimated Fair Value | $ 93,329 | $ 80,725

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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=27724398&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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