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Acquisitions Acquisitions (Tables)
 3 Months Ended
Mar. 31, 2018
Business Combinations [Abstract]  
Financial Effects of Purchase Accounting Adjustments [Table Text Block]
The following presents the financial effects of adjustments recognized in the statement of income for the three months ended March 31, 2018 and 2017 related to business combinations that occurred during 2016 and 2017.

 
Income increase (decrease)
Dollars in thousands
Three Months Ended March 31, 2018
 
Three Months Ended March 31, 2017
Interest and fees on loans
$
145

 
$
144

Interest expense on deposits
61

 
4

Amortization of intangibles
(386
)
 
(47
)
Income before income tax expense
$
(180
)
 
$
101