Goodwill and other intangible assets (Tables)

6 Months Ended

Jun. 30, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of CDI activity

The following table sets forth activity for CDI for the three and six months ended June 30, 2016 and 2015 (dollars in thousands).

	Three months ended June 30,						Six months ended    June 30,
	2016			2015			2016			2015
Gross core deposit intangibles balance, beginning of period	$	14,623		$	8,196		$	8,196		$	8,196
Accumulated amortization, beginning of period	(1,538		)	(718		)	(1,333		)	(513		)
Core deposit intangible, net, beginning of period	13,085			7,478			6,863			7,683
Established through acquisitions	—			—			6,427			—
CDI current period amortization	(365		)	(205		)	(570		)	(410		)
Total core deposit intangible, end of period	$	12,720		$	7,273		$	12,720		$	7,273

Schedule of CDI future amortization expenses

The following table provides the estimated future amortization expense of core deposit intangibles for the remaining period ending December 31, 2016 and the succeeding four years (dollars in thousands):

Years Ending December 31,
2016	$	731
2017	1,462
2018	1,462
2019	1,462
2020	1,462