Goodwill and other intangible assets (Tables)

12 Months Ended

Dec. 31, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Finite-Lived Intangible Assets

The following table sets forth activity for CDI for the years ended December 31, 2016 and 2015 (dollars in thousands). The Company had $7.7 million recorded CDI and $0.5 million amortization expense during 2014.

	2016			2015
Gross core deposit intangibles balance, beginning of period	$	8,196		$	8,196
Accumulated amortization, beginning of period	(1,333		)	(513		)
Core deposit intangible, net, beginning of period	6,863			7,683
Established through acquisitions	6,770			—
CDI current period amortization	(1,316		)	(820		)
Total core deposit intangible, end of period	$	12,317		$	6,863

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

The following table provides the estimated future amortization expense of CDI for the succeeding five years (dollars in thousands):

Years Ending December 31,
2017	$	1,497
2018	1,497
2019	1,497
2020	1,497
2021	1,497