OTHER INTANGIBLE ASSETS

The following table shows the net carrying value of the Corporation's other intangible assets:



	December 31,
	2013		2012
	(In thousands)
Other intangible assets:
Core deposit intangible assets	$	10,001	$	11,910
Mortgage servicing rights (MSRs)	3,423		3,478
Total other intangible assets	$	13,424	$	15,388

Core Deposit Intangible Assets

The following table sets forth the carrying amount, accumulated amortization and amortization expense of core deposit intangible assets that are amortizable and arose from business combinations or other acquisitions:



	December 31,
	2013		2012
	(In thousands)
Gross original amount	$	18,659	$	18,659
Accumulated amortization	8,658		6,749
Carrying amount	$	10,001	$	11,910
Amortization expense for the year ended December 31	$	1,909	$	1,569

There were no additions of core deposit intangible assets during 2013. In conjunction with the branch acquisition transaction in 2012, the Corporation recorded $5.6 million in core deposit intangible assets.

The estimated future amortization expense on core deposit intangible assets for the years ending after December 31, 2013 is as follows: 2014 - $1.8 million; 2015 - $1.7 million; 2016 - $1.5 million; 2017 - $1.2 million; 2018 - $1.1 million; 2019 and thereafter - $2.7 million.

Mortgage Servicing Rights (MSRs)

The following shows the net carrying value and fair value of MSRs and the total loans that the Corporation is servicing for others:



	December 31,
	2013		2012
	(In thousands)
Net carrying value of MSRs	$	3,423	$	3,478
Fair value of MSRs	$	6,878	$	4,716
Loans serviced for others that have servicing rights capitalized	$	886,730	$	906,314

The fair value of MSRs was estimated by calculating the present value of estimated future net servicing cash flows, taking into consideration expected prepayment rates, discount rates, servicing costs and other economic factors that are based on current market conditions. The prepayment rates and the discount rate are the most significant factors affecting valuation of the MSRs. Increases in mortgage loan prepayments reduce estimated future net servicing cash flows because the life of the underlying loan is reduced. Expected loan prepayment rates are validated by a third-party model. At December 31, 2013, the weighted average coupon rate of the Corporation's servicing portfolio was 4.33% and the discount rate was 8.5%. At December 31, 2012, the weighted average coupon rate of the Corporation's servicing portfolio was 4.57% and the discount rate was 8.5%.

There was no MSR impairment valuation allowance recorded at December 31, 2013 and 2012, as the estimated fair value of MSRs exceeded the recorded book value.

The following shows activity for capitalized MSRs for the last three years:



	Years Ended December 31,
	2013			2012			2011
	(In thousands)
Balance at beginning of year	$	3,478		$	3,593		$	3,782
Additions	1,528			2,285			1,566
Amortization	(1,583		)	(2,400		)	(1,755		)
Balance at end of year	$	3,423		$	3,478		$	3,593