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Securities (Details) - USD ($) $ in Thousands | Sep. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized Cost | $ 403,489 | $ 392,397
Gross Unrealized Gains | 726 | 4,037
Gross Unrealized Losses | (14,219) | (3,497)
Fair Value | 389,996 | 392,937
Corporate bonds |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized Cost | 1,207 | 1,238
Gross Unrealized Gains | 0 | 4
Gross Unrealized Losses | (24) | (8)
Fair Value | 1,183 | 1,234
Small Business Administration |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized Cost | 13,145 | 14,608
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (718) | (396)
Fair Value | 12,427 | 14,212
U.S. Treasury and U.S. government sponsored entities |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized Cost | 6,561 | 8,986
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (178) | (69)
Fair Value | 6,383 | 8,917
State and political subdivisions |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized Cost | 205,352 | 188,032
Gross Unrealized Gains | 707 | 3,614
Gross Unrealized Losses | (4,784) | (643)
Fair Value | 201,275 | 191,003
Mortgage-backed securities - residential |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized Cost | 154,726 | 161,635
Gross Unrealized Gains | 19 | 419
Gross Unrealized Losses | (7,318) | (1,604)
Fair Value | 147,427 | 160,450
Collateralized mortgage obligations - residential |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Amortized Cost | 22,498 | 17,898
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (1,197) | (777)
Fair Value | $ 21,301 | $ 17,121

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- Definition Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27161-111563 + Details
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