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GOODWILL AND OTHER INTANGIBLE ASSETS
3 Months Ended
Mar. 31, 2014
GOODWILL AND OTHER INTANGIBLE ASSETS  
GOODWILL AND OTHER INTANGIBLE ASSETS

NOTE 4—GOODWILL AND OTHER INTANGIBLE ASSETS

        Goodwill arises from the acquisition method of accounting for business combinations and represents the excess of the purchase price over the fair value of the net assets and other identifiable intangible assets acquired. Goodwill and other intangible assets deemed to have indefinite lives generated from purchase business combinations are not subject to amortization and are instead tested for impairment no less than annually. Impairment exists when the carrying value of goodwill exceeds its implied fair value. An impairment loss would be recognized in an amount equal to that excess and would be included in "Noninterest expense" in the condensed consolidated statement of earnings.

        Our intangible assets with definite lives are core deposit intangibles, or CDI, and customer relationship intangibles, or CRI. These intangible assets are amortized over their respective estimated useful lives to their estimated residual values and reviewed for impairment at least quarterly. The amortization expense represents the estimated decline in the value of the underlying deposits or loan customers acquired. The weighted average amortization period remaining for our CDI and CRI was 2.6 years. The aggregate CDI and CRI amortization expense is expected to be $5.3 million for 2014. The estimated aggregate amortization expense related to these intangible assets for each of the next five years is $4.8 million for 2015, $3.0 million for 2016, $1.6 million for 2017, $1.3 million for 2018, and $954,000 for 2019.

        The following table presents the changes in the gross amounts of CDI and CRI and the related accumulated amortization for the periods indicated:

 
  Three Months Ended  
 
  March 31,
2014
  December 31,
2013
  March 31,
2013
 
 
  (In thousands)
 

Gross Amount of CDI and CRI:

                   

Balance, beginning of period

  $ 48,963   $ 48,963   $ 45,412  
               

Balance, end of period

    48,963     48,963     45,412  
               

Accumulated Amortization:

                   

Balance, beginning of period

    (31,715 )   (30,285 )   (30,689 )

Amortization

    (1,364 )   (1,430 )   (1,176 )
               

Balance, end of period

    (33,079 )   (31,715 )   (31,865 )
               

Net CDI and CRI, end of period

  $ 15,884   $ 17,248   $ 13,547