Acquisitions (Tables)

3 Months Ended

Mar. 31, 2019

Acquisitions [Abstract]

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]

Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Table Text Block]

Changes in the accretable yield for purchased credit impaired loans for the three months ended March 31 were as follows:

(Dollars in thousands)	March 31, 2019			March 31, 2018
Balance, beginning of period	$	8,955		$	6,704
Accretion	(484		)	(412		)
Balance, March 31	$	8,471		$	6,292