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Goodwill and Intangible Assets (Notes)
12 Months Ended
Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets
GOODWILL AND INTANGIBLE ASSETS
 
The change in goodwill during the years ended December 31, 2015, 2014, and 2013 is as follows (in thousands):
 
2015
 
2014
 
2013
Balance, beginning of year
$
29,917

 
$
29,917

 
$
23,577

Acquired goodwill

 

 
6,340

Impairment

 

 

Balance, end of year
$
29,917

 
$
29,917

 
$
29,917



Business combinations involving the Company’s acquisition of the equity interests or net assets of another enterprise give rise to goodwill. Total goodwill at December 31, 2015 and 2014 was $29,917,000. Total goodwill at December 31, 2015 consisted of $6,340,000, $14,643,000 and $8,934,000 representing the excess of the cost of Visalia Community Bank, Service 1st Bancorp and Bank of Madera County, respectively, over the net of the amounts assigned to assets acquired and liabilities assumed in the transactions accounted for under the purchase method of accounting.  The value of goodwill is ultimately derived from the Company’s ability to generate net earnings after the acquisitions and is not deductible for tax purposes.  A decline in net earnings could be indicative of a decline in the fair value of goodwill and result in impairment.  For that reason, goodwill is assessed at least annually for impairment.
The Company has selected September 30 as the date to perform the annual impairment test. Management assessed qualitative factors including performance trends and noted no factors indicating goodwill impairment.
Goodwill is also tested for impairment between annual tests if an event occurs or circumstances change that would more likely than not reduce the fair value of the Company below its carrying amount.  No such events or circumstances arose during the fourth quarter of 2015, so goodwill was not required to be retested.
The intangible assets at December 31, 2015 represent the estimated fair value of the core deposit relationships acquired in the acquisition of Service 1st Bank in 2008 of $1,400,000 and the 2013 acquisition of Visalia Community Bank of $1,365,000.  Core deposit intangibles are being amortized using the straight-line method over an estimated life of seven to ten years from the date of acquisition. At December 31, 2015, the weighted average remaining amortization period is seven years.  The carrying value of intangible assets at December 31, 2015 was $1,024,000, net of $1,741,000 in accumulated amortization expense.  The carrying value at December 31, 2014 was $1,344,000, net of $1,421,000 in accumulated amortization expense.  Management evaluates the remaining useful lives quarterly to determine whether events or circumstances warrant a revision to the remaining periods of amortization.  Based on the evaluation, no changes to the remaining useful lives was required.  Management performed an annual impairment test on core deposit intangibles as of September 30, 2015 and determined no impairment was necessary.  Amortization expense recognized was $320,000 for 2015, $337,000 for 2014, and $268,000 for 2013.

The following table summarizes the Company’s estimated core deposit intangible amortization expense for each of the next five years (in thousands):
Years Ending December 31,
 
Estimated Core Deposit Intangible Amortization
2016
 
$
137

2017
 
137

2018
 
137

2019
 
137

2020
 
137

Thereafter
 
339

Total
 
$
1,024