GOODWILL AND INTANGIBLE ASSETS: (Tables)

12 Months Ended

Dec. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets Subject to Amortization

Intangible assets subject to amortization at December 31, 2017 and 2016 are as follows:  

	2017				2016
	Gross		Accumulated		Gross		Accumulated
(Dollar amounts in thousands)	Amount		Amortization		Amount		Amortization
Core deposit intangible	$	10,836	$	9,206	$	10,836	$	8,727
	$	10,836	$	9,206	$	10,836	$	8,727

Estimated Amortization Expense

Estimated amortization expense for the next five years is as follows:

	In thousands
2018	$	434
2019	350
2020	252
2021	232
2022	224