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Other Intangible, Net and Goodwill
3 Months Ended
Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible Assets and Goodwill
Other Intangibles, Net and Goodwill

All intangible assets determined to have finite lives are amortized over their estimated useful lives. The useful life of an intangible asset is the period over which the asset is expected to contribute directly or indirectly to future cash flows. There was no change in the gross amount of identifiable intangible assets during the three months ended March 31, 2015. Amortization expense of $0.6 million and $0.6 million for the three months ended March 31, 2015 and 2014, respectively, was included in depreciation and amortization in the consolidated statement of comprehensive income. Intangible assets subject to amortization consisted of the following at March 31, 2015:
 
Amortization period (years)
 
Gross Amount
 
Accumulated Amortization
 
Net intangible assets
 
 
 
(in thousands)
Customer relationships
20
 
$
7,600

 
$
523

 
$
7,077

Tradename
6
 
7,400

 
1,696

 
5,704

Covenants not to compete
10
 
3,100

 
429

 
2,671

Real estate options
2.2
 
942

 
640

 
302

 
 
 
$
19,042

 
$
3,288

 
$
15,754



Carrying amounts of goodwill were as follows:
 
(in thousands)
Balance at December 31, 2014
$
100,212

Acquisitions

Balance at March 31, 2015
$
100,212



Goodwill is tested at least annually for impairment by applying a fair value based analysis in accordance with the authoritative accounting guidance on goodwill and other intangible assets.  Our annual assessment is conducted as of the end of September each year or any other time when indicators requiring further assessment are identified. No indicators requiring further assessment were identified since our last assessment through March 31, 2015. Management determined that no impairment charge was required for the three month periods ended March 31, 2015 and 2014.