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Accumulated Other Comprehensive Loss (Tables)
 3 Months Ended
Dec. 31, 2017
Equity [Abstract]  
Schedule of Accumulated Other Comprehensive Income (Loss)
The changes in accumulated other comprehensive loss ("AOCI") by component during the three months ended December 31, 2017 and 2016 are as follows (dollars in thousands):
 
Three Months Ended December 31, 2017
 
Changes in fair value of available for sale securities (1)
 
Changes in OTTI on held to maturity securities (1)
 
Total (1)
Balance of AOCI at the beginning of period
$
(19
)
 
$
(105
)
 
$
(124
)
Net change
(7
)
 
(5
)
 
(12
)
Balance of AOCI at the end of period
$
(26
)
 
$
(110
)
 
$
(136
)

 
 
 
 
 
 
 
Three Months Ended December 31, 2016
 
Changes in fair value of available for sale securities (1)
 
Changes in OTTI on held to maturity securities (1)
 
Total (1)
Balance of AOCI at the beginning of period
$
4

 
$
(179
)
 
$
(175
)
Net change
(27
)
 
13

 
(14
)
Balance of AOCI at the end of period
$
(23
)
 
$
(166
)
 
$
(189
)
 
 
 
 
 
 
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(1) All amounts are net of income taxes.