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Accumulated Other Comprehensive Income (Tables)
 12 Months Ended
Dec. 31, 2017
Equity [Abstract]  
Components of Other Comprehensive Income (Loss)
AOCI represents cumulative gains and losses that are not reflected in earnings. The components of other comprehensive income (loss) are as follows:
Year Ended December 31,
2017
 
2016
 
2015
 
Before
tax
 
Tax
effect
 
Net of
tax
 
Before
tax
 
Tax
effect
 
Net of
tax
 
Before
tax
 
Tax
effect
 
Net of
tax
Change in net unrealized gain (loss) on available for sale securities:
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

Net unrealized gain (loss)
$
13

 
$
(7
)
 
$
6

 
$
(44
)
 
$
16

 
$
(28
)
 
$
(477
)
 
$
178

 
$
(299
)
Reclassification of net unrealized loss on securities transferred to held to maturity (1)
227

 
(85
)
 
142

 
—

 
—

 
—

 
—

 
—

 
—

Other reclassifications included in other revenue
(12
)
 
4

 
(8
)
 
(4
)
 
2

 
(2
)
 
—

 
—

 
—

Change in net unrealized gain (loss) on held to maturity securities:


 


 
 
 


 


 


 


 


 


Reclassification of net unrealized loss on securities transferred from available for sale (1)
(227
)
 
85

 
(142
)
 
—

 
—

 
—

 
—

 
—

 
—

Amortization of amounts previously recorded upon transfer from available for sale
31

 
(11
)
 
20

 
—

 
—

 
—

 
—

 
—

 
—

Other
(11
)
 
4

 
(7
)
 
1

 
—

 
1

 
—

 
—

 
—

Other comprehensive income (loss)
$
21

 
$
(10
)
 
$
11

 
$
(47
)
 
$
18

 
$
(29
)
 
$
(477
)
 
$
178

 
$
(299
)

(1) See Note 5 for discussion of the transfer of securities from the AFS category to the HTM category during the first quarter of 2017.
Accumulated Other Comprehensive Income Balances
AOCI balances are as follows:
 
Total
Accumulated Other
Comprehensive Income
Balance at December 31, 2014
$
165

Net unrealized gain (loss) on available for sale securities
(299
)
Balance at December 31, 2015
$
(134
)
Net unrealized gain (loss) on available for sale securities
(30
)
Other
$
1

Balance at December 31, 2016
$
(163
)
Available for sale securities:
 
Net unrealized gain (loss)
6

Reclassification of net unrealized loss on securities transferred to held to maturity
142

Other reclassifications included in other revenue
(8
)
Held to maturity securities:
 
Reclassification of net unrealized loss on securities transferred from available for sale
(142
)
Amortization of amounts previously recorded upon transfer to held to maturity from available for sale
20

Other
(7
)
Balance at December 31, 2017
$
(152
)