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GOODWILL AND OTHER INTANGIBLE ASSETS
3 Months Ended
Mar. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]  
GOODWILL AND OTHER INTANGIBLE ASSETS
NOTE 9 GOODWILL AND OTHER INTANGIBLE ASSETS    

Goodwill

Total goodwill of $469.4 million remained unchanged as of March 31, 2016 compared to December 31, 2015. Goodwill is tested for impairment on an annual basis as of December 31st, or more frequently as events occur or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying amount. The Company’s three operating segments, Retail Banking, Commercial Banking, and Other, are equivalent to the Company’s reporting units. For complete discussion and disclosure, please refer to Note 14 Business Segments to the Consolidated Financial Statements.

Impairment analysis

The Company performed its annual impairment analysis as of December 31, 2015 and concluded that there was no goodwill impairment as the fair values of all reporting units exceeded the carrying amounts of goodwill. There were no triggering events during the three months ended March 31, 2016 and therefore, no additional goodwill impairment analysis was performed. No assurance can be given that goodwill will not be written down in future periods. Please refer to Note 10 - Goodwill and Other Intangible Assets to the Consolidated Financial Statements of the Company’s 2015 Form 10-K for additional details related to the Company’s annual goodwill impairment analysis.
    
Premiums on Acquired Deposits

Premiums on acquired deposits represent the intangible value of depositor relationships resulting from deposit liabilities assumed in various acquisitions. These intangibles are tested for impairment on an annual basis, or more frequently as events occur, or as current circumstances and conditions warrant. There were no impairment write-downs on deposit premiums for the three months ended March 31, 2016, and 2015.

The following table presents the gross carrying value of intangible assets and accumulated amortization as of March 31, 2016 and December 31, 2015:
 
($ in thousands)
 
March 31,
2016
 
December 31,
2015
Gross balance
 
$
108,814

 
$
108,814

Accumulated amortization
 
74,843

 
72,739

Net carrying balance
 
$
33,971

 
$
36,075

 


Amortization Expense

The Company amortizes premiums on acquired deposits based on the projected useful lives of the related deposits. The amortization expense related to the intangible assets was $2.1 million and $2.4 million for the three months ended March 31, 2016 and 2015, respectively.

The following table presents the estimated future amortization expense of premiums on acquired deposits:
 
Year Ended December 31,
 
Amount
($ in thousands)
 
 
Remainder of 2016
 
$
5,982

2017
 
6,935

2018
 
5,883

2019
 
4,864

2020
 
3,846

Thereafter
 
6,461

Total
 
$
33,971