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Goodwill and Intangible Assets
6 Months Ended
Jun. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets
Goodwill and Intangible Assets

Goodwill

Our goodwill balance as of June 30, 2017 and December 31, 2016 of $41.1 million arose from previous acquisitions as described in our Annual Report on Form 10-K for the year ended December 31, 2016. There have been no changes in the carrying amounts of goodwill.

Other intangible assets

Our other intangible assets arose primarily from acquisitions described in our Annual Report on Form 10-K for the year ended December 31, 2016 and consist of a brand, the carrier network, distributor relationships, customer relationships, noncompete agreements and capitalized software. Finite-lived intangible assets are amortized over their useful lives from two to fifteen years.

Major classes of intangible assets as of June 30, 2017 consisted of the following ($ in thousands):
 
 
Weighted-average Amortization (years)
 
Gross Carrying Amount
 
Accumulated Amortization
 
Intangible Assets, net
Brand
14.1
 
$
1,377

 
$
(353
)
 
$
1,024

Carrier network
5.0
 
40

 
(40
)
 

Distributor relationships
6.8
 
4,059

 
(3,130
)
 
929

Noncompete agreements
4.7
 
987

 
(972
)
 
15

Customer relationships
5.8
 
1,484

 
(1,140
)
 
344

Capitalized software
6.7
 
8,571

 
(3,999
)
 
4,572

Total intangible assets
 
 
$
16,518

 
$
(9,634
)
 
$
6,884

 
Major classes of intangible assets as of December 31, 2016 consisted of the following ($ in thousands):
 
Weighted-average Amortization (years)
 
Gross Carrying Amount
 
Accumulated Amortization
 
Intangible Assets, net
Brand
14.1
 
$
1,377

 
$
(311
)
 
$
1,066

Carrier network
5.0
 
40

 
(40
)
 

Distributor relationships
6.8
 
4,059

 
(2,831
)
 
1,228

Noncompete agreements
4.7
 
987

 
(881
)
 
106

Customer relationships
5.8
 
1,484

 
(1,125
)
 
359

Capitalized software
6.7
 
8,571

 
(3,423
)
 
5,148

Total intangible assets
 
 
$
16,518

 
$
(8,611
)
 
$
7,907


 
Amortization expense for the three months ended June 30, 2017 and 2016 was $512,000 and $557,000, respectively, and for the six months ended June 30, 2017 and 2016 was $1.0 million, and $1.1 million, respectively.

Estimated annual pretax amortization of intangible assets for the remainder of 2017 and in each of the next five years and thereafter are as follows ($ in thousands):
Remainder of 2017
$
942

2018
1,725

2019
1,338

2020
1,338

2021
685

2022
114

Thereafter
742

Total
$
6,884