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Income Taxes (Details 1) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Income Tax Disclosure [Abstract] |  |  |  |  |  |  |  |  |  |  |
Income before provision for income tax expense |  |  |  |  |  |  |  |  | $ 13,179 | $ 11,696 | $ 7,396
Tax at statutory federal income tax rate |  |  |  |  |  |  |  |  | 4,481 | 3,977 | 2,515
Tax-exempt income |  |  |  |  |  |  |  |  | (369) | (348) | (353)
State income tax, net of federal tax benefit |  |  |  |  |  |  |  |  | 376 | 385 | 233
Other, net |  |  |  |  |  |  |  |  | 92 | 28 | 27
Total income tax expense | $ 1,083 | $ 1,377 | $ 1,001 | $ 1,119 | $ 1,074 | $ 802 | $ 1,121 | $ 1,045 | $ 4,580 | $ 4,042 | $ 2,422
Tax at statutory federal income tax rate (in percent) |  |  |  |  |  |  |  |  | 34.00% | 34.00% | 34.00%
Tax-exempt income (in percent) |  |  |  |  |  |  |  |  | (2.80%) | (2.98%) | (4.77%)
State income tax, net of federal tax benefit (in percent) |  |  |  |  |  |  |  |  | 2.85% | 3.30% | 3.15%
Other, net (in percent) |  |  |  |  |  |  |  |  | 0.70% | 0.24% | 0.37%
Provision for income tax expense (in percent) |  |  |  |  |  |  |  |  | 34.75% | 34.56% | 32.75%

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