Goodwill and Other Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of gross carrying value of core deposit intangible assets and accumulated amortization

The following table presents the gross carrying value of core deposit intangible assets and accumulated amortization as of September 30, 2018 and December 31, 2017:

($ in thousands)	September 30, 2018			December 31, 2017
Gross balance (1)	$	86,099		$	100,166
Accumulated amortization (1)	(70,304		)	(79,112		)
Net carrying balance (1)	$	15,795		$	21,054

(1) Excludes fully amortized core deposit intangible assets.

Schedule of estimated future amortization expense of core deposit intangibles

The following table presents the estimated future amortization expense of core deposit intangibles as of September 30, 2018:

Year Ended December 31,	Amount ($ in thousands)
Remainder of 2018	$	1,266
2019	4,518
2020	3,634
2021	2,749
2022	1,865
Thereafter	1,763
Total	$	15,795