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Goodwill And Other Intangible Assets
3 Months Ended
Mar. 31, 2012
Goodwill And Other Intangible Assets [Abstract]  
Goodwill And Other Intangible Assets
4. Goodwill and Other Intangible Assets

The following table presents information about the Company's intangible assets which have estimable useful lives.

March 31, 2012
December 31, 2011
 
 
(In thousands)
Gross Carrying Amount
Accumulated Amortization
Valuation Allowance
Net Amount
Gross Carrying Amount
Accumulated Amortization
Valuation Allowance
Net Amount
Amortizable intangible assets:
    
    
    
    
    
    
Core deposit premium
$
25,720

$
(19,336
)
$

$
6,384

$
25,720

$
(18,750
)
$

$
6,970

Mortgage servicing rights
3,097

(2,024
)
(387
)
686

3,097

(1,926
)
(427
)
744

Total
$
28,817

$
(21,360
)
$
(387
)
$
7,070

$
28,817

$
(20,676
)
$
(427
)
$
7,714


Aggregate amortization expense on intangible assets was $684 thousand and $813 thousand, respectively, for the three months ended March 31, 2012 and 2011. The following table shows the estimated annual amortization expense for the next five fiscal years. This expense is based on existing asset balances and the interest rate environment as of March 31, 2012. The Company's actual amortization expense in any given period may be different from the estimated amounts depending upon the acquisition of intangible assets, changes in mortgage interest rates, prepayment rates and other market conditions.

 (In thousands)
2012
$
2,300

2013
1,758

2014
1,281

2015
937

2016
625



Changes in the carrying amount of goodwill and net other intangible assets for the three month period ended March 31, 2012 is as follows.

(In thousands)
Goodwill
Core Deposit Premium
Mortgage Servicing Rights
Balance January 1, 2012
$
125,585

$
6,970

$
744

Amortization

(586
)
(98
)
Impairment reversal


40

Balance March 31, 2012
$
125,585

$
6,384

$
686



Goodwill allocated to the Company's operating segments at March 31, 2012 and December 31, 2011 is shown below.

(In thousands)
Consumer segment
$
67,765

Commercial segment
57,074

Wealth segment
746

Total goodwill
$
125,585