Core Deposit Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Core Deposit Intangible and Related Accumulated Amortization

The following table shows the core deposit intangible and the related accumulated amortization as of December 31:

(Dollars in thousands)	2017			2016			2015
Gross carrying amount	$	1,251		$	1,251		$	1,251
Accumulated amortization		(984	)		(868	)		(747	)
Net carrying amount	$	267		$	383		$	504

Future Amortization Expense for Core Deposit Asset

The estimated aggregate future amortization expense for the core deposit assets remaining as of December 31, 2017 was as follows:

(Dollars in thousands)	Core Deposit Amortization
2018		$	101
2019			63
2020			59
2021			44
		$	267