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Income Taxes - Components of Deferred Income Tax Provision (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Components of the provision for deferred income taxes |  |  |
Provision for loan losses | $ 1,680 | $ 42 | $ 2,480
Deferred compensation | 85 | (45) | 97
Amortization of core deposit intangible assets | 574 | 228 | 230
Stock option expense | 80 | (132) | (151)
OREO write downs | 2,725 | 1,807 | 1,722
Federal net operating loss carryforward | 12,122 | 4,743 | 2,896
State net operating loss carryforward | 715 | 1,011 | 659
Deferred tax credit | 2,058 | (309) | (198)
Depreciation | (297) | 80 | (201)
Mortgage servicing rights | (674) | 276 | 164
Goodwill amortization/impairment | 4,040 | 1,496 | 1,506
State tax benefits | (1,738) | (559) | (604)
Other, net | 201 | (217) | 156
Total deferred tax benefit | 21,571 | 8,421 | 8,756
Difference between effective tax rates and federal statutory rates applied to financial statement income |  |  |
Tax at statutory federal income tax rate | 11,817 | 8,577 | 8,526
Nontaxable interest income, net of disallowed interest deduction | (1,976) | (347) | (253)
BOLI Income | (501) | (449) | (487)
Impact of Federal tax rate change | 9,475 |  |
State income taxes, net of federal benefit | 1,775 | 1,148 | 1,126
Impact of Illinois tax rate change | (1,566) |  |
Other, net | 140 | (109) | 64
Provision for income taxes | 19,164 | 8,820 | 8,976
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest | $ 34,302 | $ 24,504 | $ 24,361

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- Definition The component of income tax expense for the period representing the increase (decrease) in the entity's deferred income tax expense (benefit) pertaining to deferred compensation. + References No definition available. + Details
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- Definition The component of income tax expense for the period representing the increase (decrease) in the entity's deferred income tax expense (benefit) pertaining to depreciation. + References No definition available. + Details
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- Definition The component of income tax expense for the period representing the increase (decrease) in the entity's deferred income tax expense (benefit) pertaining to goodwill. + References No definition available. + Details
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- Definition The component of income tax expense for the period representing the increase (decrease) in the entity's deferred income tax expense (benefit) pertaining to intangible assets other than goodwill. + References No definition available. + Details
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- Definition The component of income tax expense for the period representing the increase (decrease) in the entity's deferred income tax expense (benefit) pertaining to mortgage servicing rights. + References No definition available. + Details
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- Definition The component of income tax expense for the period representing the increase (decrease) in the entity's deferred income tax expense (benefit) pertaining to deductible domestic operating loss carryforwards, excluding state and local operating loss carryforwards. + References No definition available. + Details
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- Definition The component of income tax expense for the period representing the increase (decrease) in the entity's deferred income tax expense (benefit) pertaining to deductible state and local operating loss carryforwards. + References No definition available. + Details
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- Definition The component of income tax expense for the period representing the increase (decrease) in the entity's deferred income tax expense (benefit) not separately disclosed. + References No definition available. + Details
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- Definition The component of income tax expense for the period representing the increase (decrease) in the entity's deferred income tax expense (benefit) pertaining to wrote downs on other real estate owned. + References No definition available. + Details
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- Definition The component of income tax expense for the period representing the increase (decrease) in the entity's deferred income tax expense (benefit) pertaining to provision for loan losses. + References No definition available. + Details
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- Definition The component of income tax expense for the period representing the increase (decrease) in the entity's deferred income tax expense (benefit) pertaining to share based compensation. + References No definition available. + Details
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- Definition The component of income tax expense for the period representing the increase (decrease) in the entity's deferred income tax expense (benefit) pertaining to state tax benefits. + References No definition available. + Details
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- Definition The component of deferred income tax expense (benefit) for the period representing the increase (decrease) in the entity's deferred income tax expense (benefit) pertaining to deferred tax credits. + References No definition available. + Details
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- Definition Represents the amount of income tax reconciliation non-deductible bank owned life insurance income. + References No definition available. + Details
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- Definition Amount of income tax expense (benefit) from effect of Tax Cuts and Jobs Act of 2017. + References No definition available. + Details
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- Definition Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319 Reference 3: 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 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 6.I.7) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 + Details
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- Definition Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 20 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=68072869&loc=d3e41242-110953 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(10)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(15)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(8)) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 + Details
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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 Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, attributable to increase (decrease) in the income tax rates. + 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 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=84176650&loc=d3e32059-109318 + 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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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments. + 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 + Details
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