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Securities (Tables)
6 Months Ended
Jun. 30, 2016
Investments debt and equity securities [Abstract]  
Available-for-sale Securities [Table Text Block]
1 year1 to 55 to 10After 10FairGross Unrealized Amortized
(Dollars in thousands)or lessyearsyearsyearsValueGainsLossesCost
June 30, 2016
Agency obligations (a)$3,11323,13616,39042,639943$41,696
Agency RMBS (a)1,26520,22381,391102,8792,132100,747
State and political subdivisions2,00411,44058,04071,4843,75967,725
Total available-for-sale$3,11326,40548,053139,431217,0026,834$210,168

December 31, 2015
Agency obligations (a)$5,00025,85219,4639,77060,085384518$60,219
Agency RMBS (a)1,62313,51195,820110,954968780110,766
State and political subdivisions49712,09458,05770,6483,022767,633
Total available-for-sale$5,00027,97245,068163,647241,6874,3741,305$238,618
(a) Includes securities issued by U.S. government agencies or government sponsored entities.
Available-for-sale Securities, Continuous Unrealized Loss Position [Table Text Block]
Less than 12 Months12 Months or LongerTotal
FairUnrealizedFairUnrealizedFairUnrealized
(Dollars in thousands)ValueLossesValueLossesValueLosses

December 31, 2015:
Agency obligations $8,157224,444516$32,601518
Agency RMBS42,34536718,18441360,529780
State and political subdivisions267196961,2367
Total $50,76937043,597935$94,3661,305
Schedule of Realized Gain (Loss) [Table Text Block]
Realized Gains and Losses
The following table presents the gross realized gains and losses on sales of securities.
Quarter ended June 30,Six Months Ended June 30,
(Dollars in thousands)2016201520162015
Gross realized gains$$3
Realized gains, net$$3