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Business Combinations Pro Forma Information (Details) - First Clover Leaf [Member] - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 3 Months Ended
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Mar. 31, 2017 | Mar. 31, 2016
Business Acquisition [Line Items] |  |
Business Acquisitions Pro Forma Net Interest Income | $ 22,772 | $ 21,225
Business Acquisitions Pro Forma Provision For Loan Losses | 1,722 | (387)
Business Acquisitions Pro Forma Non-Interest Income | 7,496 | 7,242
Business Acquisitions Pro Forma Non-Interest Expense | 19,202 | 20,060
Business Acquisitions Pro Forma Income before Income Taxes | 9,344 | 8,794
Business Acquisitions Pro Forma, Income Tax Expense | 3,080 | 2,999
Business Acquisition, Pro Forma Net Income (Loss) | 6,264 | 5,795
Business Acquisitions Pro Forma, Dividends On Preferred Shares | 0 | 550
Business Acquisitions Pro Forma, Net Income Available To Common Stockholders | $ 6,264 | $ 5,245
Business Acquisition, Pro Forma Earnings Per Share, Basic | $ 500 | $ 470
Business Acquisition, Pro Forma Earnings Per Share, Diluted | $ 500 | $ 470
Weighted Average Basic Shares Outstanding, Pro Forma | 12,475,728 | 11,056,123
Pro Forma Weighted Average Shares Outstanding, Diluted | 12,485,743 | 12,416,881

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