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Income Taxes (Notes) | 12 Months Ended
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Dec. 31, 2016
Income Tax Disclosure [Abstract] |
Income Taxes | Income Taxes The components of federal and state income tax expense for the years ended December 31, 2016, 2015 and 2014 were as follows (in thousands):
|  | 2016 |  | 2015 |  | 2014
Current |  |  |  |  |  |
Federal |  | $ | 11,375 |  |  | $ | 7,357 |  |  | $ | 6,956 |
State |  | 2,953 |  |  | 1,841 |  |  | 2,287 |
Total Current |  | 14,328 |  |  | 9,198 |  |  | 9,243 |
Deferred |  |  |  |  |  |  |  |  |
Federal |  | (1,940 | ) |  | (84 | ) |  | (17 | )
State |  | (448 | ) |  | 104 |  |  | 28 |
Total Deferred |  | (2,388 | ) |  | 20 |  |  | 11 |
Total |  | $ | 11,940 |  |  | $ | 9,218 |  |  | $ | 9,254 |
Recorded income tax expense differs from the expected tax expense (computed by applying the applicable statutory U.S. federal tax rate of 35% to income before income taxes). During 2016, 2015 and 2014, the Company was in a graduated tax rate position. The principal reasons for the difference are as follows (in thousands):
|  | 2016 |  | 2015 |  | 2014
Expected income taxes |  | $ | 11,823 |  |  | $ | 9,006 |  |  | $ | 8,650 |
Effects of: |  |  |  |  |  |  |  |  |
Tax-exempt income from bank owned life insurance |  | (235 | ) |  | — |  |  | — |
Other tax exempt income |  | (1,577 | ) |  | (1,103 | ) |  | (954 | )
Nondeductible interest expense |  | 21 |  |  | 11 |  |  | 10 |
State taxes, net of federal taxes |  | 1,628 |  |  | 1,264 |  |  | 1,505 |
Other items |  | 280 |  |  | 41 |  |  | 43 |
Effect of marginal tax rate |  | — |  |  | (1 | ) |  | — |
Total |  | $ | 11,940 |  |  | $ | 9,218 |  |  | $ | 9,254 |
Tax expense recorded by the Company during 2016, 2015 and 2014 did not include any interest or penalties. Tax returns filed with the Internal Revenue Service and Illinois Department of Revenue are subject to review by law under a three-year statute of limitations. The Company is no longer subject to U.S. federal or state income tax examinations by tax authorities for years before 2013. The tax effects of the temporary differences that gave rise to significant portions of the deferred tax assets and deferred tax liabilities at December 31, 2016 and 2015 are presented below (in thousands):
|  | 2016 |  | 2015
Deferred tax assets: |  |  |  |
Allowance for loan losses |  | $ | 6,599 |  |  | $ | 5,735 |
Available-for-sale investment securities |  | 3,680 |  |  | — |
Deferred compensation |  | 1,030 |  |  | 1,046 |
Supplemental retirement |  | 259 |  |  | 281 |
Core deposit premium and other intangible assets |  | 691 |  |  | 400 |
Other-than-temporary impairment on securities |  | 438 |  |  | 438 |
Stock Compensation Expense |  | 194 |  |  | 197 |
Deferred Revenue |  | 101 |  |  | 98 |
Purchase Accounting |  | 1,791 |  |  | — |
Acquisition Costs |  | 319 |  |  | 430 |
Other |  | 966 |  |  | 155 |
Total gross deferred tax assets |  | 16,068 |  |  | 8,780 |
Deferred tax liabilities: |  |  |  |  |  |
Deferred loan costs |  | 178 |  |  | 133 |
Intangibles amortization |  | 4,467 |  |  | 3,791 |
Prepaid expenses |  | 383 |  |  | 340 |
FHLB stock dividend |  | 380 |  |  | 278 |
Depreciation |  | 740 |  |  | 766 |
Purchase accounting |  | — |  |  | 7 |
Accumulated accretion |  | 72 |  |  | 72 |
Mortgage servicing rights |  | 387 |  |  | — |
Available-for-sale investment securities |  | — |  |  | 462 |
Total gross deferred tax liabilities |  | 6,607 |  |  | 5,849 |
Net deferred tax assets |  | $ | 9,461 |  |  | $ | 2,931 |
Net deferred tax assets are recorded in other assets on the consolidated balance sheets. No valuation allowance related to deferred tax assets was recorded at December 31, 2016 and 2015 as management believes it is more likely than not that the deferred tax assets will be fully realized.

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- Definition The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information. + References Reference 1: 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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32559-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32718-109319 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32639-109319 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32537-109319 + Details
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