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Other Comprehensive Income (Loss)
 9 Months Ended
Sep. 30, 2018
Equity [Abstract]  
Other Comprehensive Income (Loss) Other Comprehensive Income (Loss)

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 quarter ended September 30, 2018 and 2017.
 
For the nine months ended September 30,
For the quarter ended September 30,
 
2018
2017
2018
2017
Balance at beginning of period
$
(2,901,000
)
$
(935,000
)
$
(7,245,000
)
$
(585,000
)
Unrealized gains (losses) arising during the period
(7,753,000
)
640,000

(2,390,000
)
99,000

Reclassification of realized gains during the period
(137,000
)
(471,000
)
(1,000
)
(468,000
)
Related deferred taxes (at a Federal Income Tax rate of 21% for September 30, 2018 and 35% for September 30, 2017)
1,658,000

(59,000
)
503,000

129,000

Net change
(6,232,000
)
110,000

(1,888,000
)
(240,000
)
Balance at end of period
$
(9,133,000
)
$
(825,000
)
$
(9,133,000
)
$
(825,000
)


The reclassification of realized gains is included in the net securities gains line of the consolidated statements of income and comprehensive income and the tax effect is included in the income tax expense line of the same statement.
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 quarter ended September 30, 2018 and 2017.
 
For the nine months ended September 30,
For the quarter ended September 30,
 
2018
2017
2018
2017
Balance at beginning of period
$
(174,000
)
$
(129,000
)
$
(189,000
)
$
(137,000
)
Amortization of net unrealized losses
(25,000
)
(17,000
)
(6,000
)
(5,000
)
Related deferred taxes (at a Federal Income Tax rate of 21% for September 30, 2018 and 35% for September 30, 2017)
5,000

6,000

1,000

2,000

Net change
(20,000
)
(11,000
)
(5,000
)
(3,000
)
Balance at end of period
$
(194,000
)
$
(140,000
)
$
(194,000
)
$
(140,000
)


The following table presents the effect of the Company's derivative financial instruments included in other comprehensive income (loss) for the nine months and quarter ended September 30, 2018 and 2017.
 
For the nine months ended September 30,
For the quarter ended September 30,
 
2018
2017
2018
2017
Balance at beginning of period
$
1,544,000

$
1,163,000

$
2,066,000

$
1,055,000

Unrealized gains, (losses) on cash flow hedging derivatives arising during the period
934,000

(198,000
)
273,000

(31,000
)
Related deferred taxes (at a Federal Income Tax rate of 21% for September 30, 2018 and 35% for September 30, 2017)
(196,000
)
70,000

(57,000
)
11,000

Net change
738,000

(128,000
)
216,000

(20,000
)
Balance at end of period
$
2,282,000

$
1,035,000

$
2,282,000

$
1,035,000



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 quarter ended September 30, 2018 and 2017.
 
For the nine months ended September 30,
For the quarter ended September 30,
 
2018
2017
2018
2017
Unrecognized postretirement benefits at beginning of period
$
(147,000
)
$
(102,000
)
$
(147,000
)
$
(102,000
)
Amortization of unrecognized transition obligation
—

—

—

—

Change in unamortized net actuarial gain (loss)
—

—

—

—

Related deferred taxes (at a Federal Income Tax rate of 21% for September 30, 2018 and 35% for September 30, 2017)
—

—

—

—

Unrecognized postretirement benefits at end of period
$
(147,000
)
$
(102,000
)
$
(147,000
)
$
(102,000
)