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Other Comprehensive Income (Loss) (Tables) | 9 Months Ended
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Sep. 30, 2017
Equity [Abstract] |
Schedule of Accumulated Other Comprehensive Income (Loss) | The following table summarizes activity in the unrealized loss on securities transferred from available for sale to held to maturity included in other comprehensive income (loss) for the nine months and quarters ended September 30, 2017 and 2016.
| For the nine months ended September 30, | For the quarter ended September 30,
| 2017 | 2016 | 2017 | 2016
Balance at beginning of period | $ | (129,000 | ) | $ | (112,000 | ) | $ | (137,000 | ) | $ | (133,000 | )
Amortization of net unrealized gains (losses) | (17,000 | ) | (18,000 | ) | (5,000 | ) | 14,000 |
Related deferred taxes | 6,000 |  | 6,000 |  | 2,000 |  | (5,000 | )
Net change | (11,000 | ) | (12,000 | ) | (3,000 | ) | 9,000 |
Balance at end of period | $ | (140,000 | ) | $ | (124,000 | ) | $ | (140,000 | ) | $ | (124,000 | )
The following table presents the effect of the Company's derivative financial instruments included in other comprehensive income (loss) for the nine months and quarters ended September 30, 2017 and 2016.
| For the nine months ended September 30, | For the quarter ended September 30,
| 2017 | 2016 | 2017 | 2016
Balance at beginning of period | $ | 1,163,000 |  | $ | — |  | $ | 1,055,000 |  | $ | (135,000 | )
Unrealized gains (losses) on cash flow hedging derivatives arising during the period | (198,000 | ) | 90,000 |  | (31,000 | ) | 298,000 |
Related deferred taxes | 70,000 |  | (32,000 | ) | 11,000 |  | (105,000 | )
Net change | (128,000 | ) | 58,000 |  | (20,000 | ) | 193,000 |
Balance at end of period | $ | 1,035,000 |  | $ | 58,000 |  | $ | 1,035,000 |  | $ | 58,000 |
The following table summarizes activity in the unrealized gain or loss on postretirement benefits included in other comprehensive income (loss) for the nine months and quarters ended September 30, 2017 and 2016.
| For the nine months ended September 30, | For the quarter ended September 30,
| 2017 | 2016 | 2017 | 2016
Unrecognized postretirement benefits at beginning of period | $ | (102,000 | ) | $ | (156,000 | ) | $ | (102,000 | ) | $ | (156,000 | )
Amortization of unrecognized transition obligation | — |  | — |  | — |  | — |
Change in unamortized net actuarial gain (loss) | — |  | — |  | — |  | — |
Related deferred taxes | — |  | — |  | — |  | — |
Unrecognized postretirement benefits at end of period | $ | (102,000 | ) | $ | (156,000 | ) | $ | (102,000 | ) | $ | (156,000 | )
The following table summarizes activity in the unrealized gain or loss on available for sale securities included in other comprehensive income (loss) for the nine months and quarters ended September 30, 2017 and 2016.
| For the nine months ended September 30, | For the quarter ended September 30,
| 2017 | 2016 | 2017 | 2016
Balance at beginning of period | $ | (935,000 | ) | $ | 1,123,000 |  | $ | (585,000 | ) | $ | 4,000,000 |
Unrealized gains (losses) arising during the period | 640,000 |  | 3,106,000 |  | 99,000 |  | (1,851,000 | )
Reclassification of realized gains during the period | (471,000 | ) | (668,000 | ) | (468,000 | ) | (137,000 | )
Related deferred taxes | (59,000 | ) | (853,000 | ) | 129,000 |  | 696,000 |
Net change | 110,000 |  | 1,585,000 |  | (240,000 | ) | (1,292,000 | )
Balance at end of period | $ | (825,000 | ) | $ | 2,708,000 |  | $ | (825,000 | ) | $ | 2,708,000 |

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580 + Details
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