Other Intangible Assets and Goodwill (Tables)

12 Months Ended

Dec. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of core deposit intangibles

The following table sets forth information regarding the Company’s core deposit intangibles:

	At or for the Years ended
(Dollars in thousands)	December 31, 2018			December 31, 2017		December 31, 2016
Gross carrying value	$	62,977		21,649		21,943
Accumulated amortization	(13,735		)	(7,465	)	(9,596	)
Net carrying value	$	49,242		14,184		12,347
Aggregate amortization expense	$	6,270		2,494		2,970
Estimated amortization expense for the years ending December 31,
2019	$	6,768
2020	6,598
2021	6,407
2022	6,187
2023	5,711

Changes in the carrying value of goodwill

The following schedule discloses the changes in the carrying value of goodwill:

	Years ended
(Dollars in thousands)	December 31, 2018		December 31, 2017	December 31, 2016
Net carrying value at beginning of period	$	177,811	147,053	140,638
Acquisitions and adjustments	111,775		30,758	6,415
Net carrying value at end of period	$	289,586	177,811	147,053