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Goodwill and Other Intangible Assets
12 Months Ended
Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Other Intangible Assets
Goodwill and Other Intangible Assets

Goodwill represents the excess of the purchase price over the fair value of net assets acquired of businesses and is not amortized. Goodwill is evaluated for impairment on an annual basis, or more frequently if impairment indicators arise, using a fair-value-based test that compares the fair value of the reporting unit to its carrying value. The carrying value of goodwill as of December 31, 2015 and 2014 was $44,438,000 in both periods.

The cost of intangible assets is based on fair values at the date of acquisition. Intangible assets with determinable lives are amortized on a straight-line basis over their estimated useful life (between 7 and 10 years).

The following table sets forth the amounts of our identifiable intangible assets subject to amortization, which were acquired in acquisitions.

 
December 31,
 
2015
 
2014
Customer relationships
$
35,781,000

 
$
35,781,000

Non-compete agreements
800,000

 
800,000

Total other intangibles, gross
36,581,000

 
36,581,000

Less accumulated amortization
19,473,000

 
16,232,000

Other intangibles, net
$
17,108,000

 
$
20,349,000



The customer relationships and non-compete agreements have a weighted-average amortization period of eight years. As of December 31, 2014, the Company's non-compete agreements have been fully amortized.

The following table sets forth the estimated amortization expense for intangibles subject to amortization for the following five fiscal years:

Period/Year
Customer
Relationships
2016
$
2,699,000

2017
2,427,000

2018
2,328,000

2019
2,130,000

2020
2,130,000

Thereafter
5,394,000



Amortization expense for the years ended December 31, 2015, 2014 and 2013 was $3,241,000, $3,323,000 and $2,831,000, respectively.