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Quarterly Financial Data (Unaudited) (Tables) | 12 Months Ended
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Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract] |
Schedule of Quarterly Financial Data |
|  | Interest Income |  |  | Net Interest Income |  |  | Net Income |  |  | Basic Earnings per Common Share |  |  | Diluted Earnings per Common Share |
2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
First quarter (1)(2) |  | $ | 13,692 |  |  | $ | 12,892 |  |  | $ | 4,635 |  |  | $ | 0.47 |  |  | $ | 0.40 |
Second quarter (3)(4) |  |  | 14,228 |  |  |  | 13,367 |  |  |  | 3,596 |  |  |  | 0.32 |  |  |  | 0.29 |
Third quarter (3) |  |  | 14,836 |  |  |  | 13,680 |  |  |  | 3,660 |  |  |  | 0.33 |  |  |  | 0.29 |
Fourth quarter (3)(5) |  |  | 15,838 |  |  |  | 14,563 |  |  |  | 3,981 |  |  |  | 0.36 |  |  |  | 0.30 |
2016 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
First quarter (1)(2) |  | $ | 13,053 |  |  | $ | 12,235 |  |  | $ | 4,725 |  |  | $ | 0.55 |  |  | $ | 0.43 |
Second quarter (5)(6) |  |  | 13,739 |  |  |  | 12,940 |  |  |  | 5,181 |  |  |  | 0.61 |  |  |  | 0.47 |
Third quarter (7) |  |  | 13,370 |  |  |  | 12,526 |  |  |  | 3,680 |  |  |  | 0.41 |  |  |  | 0.34 |
Fourth quarter (8) |  |  | 13,405 |  |  |  | 12,558 |  |  |  | 3,631 |  |  |  | 0.39 |  |  |  | 0.33 |
(1) | Interest income and net interest income increased due to loan volume and rate and volume on interest-bearing deposits in other banks.
(2) | Net income increased due to fees on tax refund processing program.
(3) | Interest income and net interest income increased due to increases in loan volume and rate.
(4) | Net income decreased due to a decrease in fees on the tax refund processing program.
(5) | Interest income and net interest income increased due to interest recoveries on non-performing loans.
(6) | Net income increased due to interest recoveries and provision credit.
(7) | Interest income, net interest income and net income decreased due to previous quarter interest recoveries and provision credit.
(8) | Interest income and net interest income increased due to loan volume and interest recoveries.

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- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=84173487&loc=d3e1280-108306 + Details
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