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Income Taxes (Details 1) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 | Sep. 30, 2017 | [1] | Jun. 30, 2017 | [1] | Mar. 31, 2017 | [1] | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Effective Income Tax Rate Reconciliation, Amount [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Statutory tax |  |  |  |  |  |  |  |  |  | $ 11,474 | $ 9,815 | $ 3,694
Effect of nontaxable interest |  |  |  |  |  |  |  |  |  | (2,054) | (1,684) | (1,403)
Bank owned life insurance, net |  |  |  |  |  |  |  |  |  | (291) | (283) | (242)
Tax credits |  |  |  |  |  |  |  |  |  | (371) | (367) | (236)
Effect of nontaxable insurance premiums |  |  |  |  |  |  |  |  |  | (348) | (143) | 0
Impact of enactment of federal tax reform | $ 1,800 |  |  |  |  |  |  |  |  | 1,793 | 0 | 0
Nondeductible acquisition costs |  |  |  |  |  |  |  |  |  | 70 | 40 | 401
Other |  |  |  |  |  |  |  |  |  | (204) | 107 | 285
TOTALS | $ 4,084 | [1] | $ 2,009 | $ 2,004 | $ 1,972 | $ 2,014 | $ 1,967 | $ 1,833 | $ 1,671 | $ 10,069 | $ 7,485 | $ 2,499
[1] | Income tax expense for the fourth quarter was elevated due to the additional $1.8 million of tax expense from the re-measurement of the Company’s net deferred tax asset.

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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(h)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 + Details
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