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Other Comprehensive Income | 12 Months Ended
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Dec. 31, 2017
Equity [Abstract] |
Other Comprehensive Income | OTHER COMPREHENSIVE INCOME The gross amounts of each component of other comprehensive income and the related tax effects for the periods indicated are as follows:
Year ended December 31, 2017 | Before Tax Amount | Tax Expense (Benefit) | Net of Tax Amount
Investment securities available-for sale: |  |  |
Change in net unrealized loss during period | $ | (6.5 | ) | $ | (2.7 | ) | $ | (3.8 | )
Reclassification adjustment for net gains included in net income | (0.7 | ) | (0.3 | ) | (0.4 | )
Change in unamortized loss on available-for-sale securities transferred into held-to-maturity | 1.8 |  | 0.7 |  | 1.1 |
Change in net unrealized loss on derivatives | (1.1 | ) | (0.4 | ) | (0.7 | )
Reclassification adjustment for derivative net (gains) losses included in net income | 1.1 |  | 0.4 |  | 0.7 |
Defined benefits post-retirement benefit plan: |  |  |
Change in net actuarial loss (gain) | (1.2 | ) | (0.5 | ) | (0.7 | )
Total other comprehensive loss | $ | (6.6 | ) | $ | (2.8 | ) | $ | (3.8 | )
Year ended December 31, 2016 | Before Tax Amount | Tax Expense (Benefit) | Net of Tax Amount
Investment securities available-for sale: |  |  |
Change in net unrealized loss during period | $ | (19.4 | ) | $ | (7.6 | ) | $ | (11.8 | )
Reclassification adjustment for net gains included in net income | (0.3 | ) | (0.1 | ) | (0.2 | )
Unamortized premium on available-to-sale securities transferred into held-for-maturity | 1.9 |  | 0.7 |  | 1.2 |
Change in net unrealized gain on derivatives | (0.2 | ) | (0.1 | ) | (0.1 | )
Defined benefits post-retirement benefit plan: |  |  |
Change in net actuarial loss | 4.0 |  | 1.6 |  | 2.4 |
Total other comprehensive loss | $ | (14.0 | ) | $ | (5.5 | ) | $ | (8.5 | )
Year ended December 31, 2015 | Before Tax Amount | Tax Expense (Benefit) | Net of Tax Amount
Investment securities available-for sale: |  |  |
Change in net unrealized loss during period | $ | 3.1 |  | $ | 1.2 |  | $ | 1.9 |
Reclassification adjustment for net gains included in net income | (0.2 | ) | (0.1 | ) | (0.1 | )
Change in unamortized gain on available-for-sale securities transferred into held-to-maturity | 1.6 |  | 0.6 |  | 1.0 |
Change in net unrealized gain on derivatives | 0.2 |  | 0.1 |  | 0.1 |
Defined benefits post-retirement benefit plan: |  |  |
Change in net actuarial loss | 0.1 |  | 0.1 |  | — |
Total other comprehensive income | $ | 4.8 |  | $ | 1.9 |  | $ | 2.9 |
The components of accumulated other comprehensive income (loss), net of income taxes, are as follows:
Year ended December 31, | 2017 |  | 2016
Net unrealized gain (loss) on investment securities available-for-sale | $ | (13.2 | ) |  | $ | (10.1 | )
Net actuarial gain (loss) on defined benefit post-retirement benefit plans | 1.3 |  |  | 2.0 |
Net unrealized gain (loss) on derivatives | — |  |  | — |
Net accumulated other comprehensive income (loss) | $ | (11.9 | ) |  | $ | (8.1 | )

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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -URI http://asc.fasb.org/topic&trid=2134417 + Details
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- References No definition available. + Details
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