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OTHER INTANGIBLE ASSETS (Tables)

12 Months Ended

Dec. 31, 2014

Schedule of changes in other intangible assets

	Core			Mortgage
	Deposit			Servicing
	Premium			Rights			Total
	(Dollars in thousands)

Balance as of December 31, 2012	$	15,378		$	22,121		$	37,499
Additions	—			2,702			2,702
Amortization	(2,674		)	(4,744		)	(7,418		)
Balance as of December 31, 2013	$	12,704		$	20,079		$	32,783
Additions	—			2,246			2,246
Amortization	(2,675		)	(2,657		)	(5,332		)
Balance as of December 31, 2014	$	10,029		$	19,668		$	29,697

Schedule of gross carrying value and accumulated amortization related to intangible assets

	December 31, 2014							December 31, 2013
	Gross					Net		Gross					Net
	Carrying		Accumulated			Carrying		Carrying		Accumulated			Carrying
	Value		Amortization			Value		Value		Amortization			Value
	(Dollars in thousands)

Core deposit premium	$	44,642	$	(34,613	)	$	10,029	$	44,642	$	(31,938	)	$	12,704
Mortgage servicing rights	56,687		(37,019		)	19,668		54,441		(34,362		)	20,079
Total	$	101,329	$	(71,632	)	$	29,697	$	99,083	$	(66,300	)	$	32,783

Schedule of estimated amortization expense

Based on our other intangible assets held as of December 31, 2014, estimated amortization expense for the next five succeeding fiscal years and all years thereafter are as follows:

	Estimated Amortization Expense
			Mortgage
	Core Deposit		Servicing
	Premium		Rights		Total
	(Dollars in thousands)

2015	$	2,674	$	2,595	$	5,269
2016	2,674		1,906		4,580
2017	2,674		1,431		4,105
2018	2,007		1,069		3,076
2019	—		761		761
Thereafter	—		11,906		11,906
Total	$	10,029	$	19,668	$	29,697

Schedule of fair market value and key assumptions used in determining the fair market value of our mortgage servicing rights

	Year Ended December 31,
	2014			2013
	(Dollars in thousands)

Fair market value, beginning of period	$	21,399		$	22,356
Fair market value, end of period	19,975			21,399
Weighted average discount rate	9.5		%	8.0		%
Weighted average prepayment speed assumption	13.2			13.6