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Goodwill and Intangible Assets (Tables)
12 Months Ended
Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill
The change in the carrying value of goodwill for the year ended December 31, 2015 for the Clear Aligner segment, which are also our reporting units, are as follows (in thousands):
 
Total
Balance as of December 31, 2013
$
61,623

Adjustments 1
(254
)
Balance as of December 31, 2014
61,369

Adjustments 1
(295
)
Balance as of December 31, 2015
$
61,074



1  
The adjustments to goodwill were a result of foreign currency translation.
Schedule Of Amortized Intangible Assets
ntangible assets arising either as a direct result from the Cadent acquisition or individually acquired are being amortized as follows (in thousands):
 
Weighted Average Amortization Period (in years)
 
Gross Carrying Amount as of
December 31, 2015
 
Accumulated
Amortization
 
Impairment Charge
 
Net Carrying
Value as of
December 31, 2015
Trademarks
15
 
$
7,100

 
$
(1,492
)
 
$
(4,179
)
 
$
1,429

Existing technology
13
 
12,600

 
(3,577
)
 
(4,328
)
 
4,695

Customer relationships
11
 
33,500

 
(10,957
)
 
(10,751
)
 
11,792

Other
8
 
285

 
(113
)
 

 
172

Total Intangible Assets
 
 
$
53,485

 
$
(16,139
)
 
$
(19,258
)
 
$
18,088


 
Weighted Average Amortization Period (in years)
 
Gross Carrying
Amount as of
December 31, 2014
 
Accumulated
Amortization
 
Impairment Charge
 
Net Carrying
Value as of
December 31, 2014
Trademarks
15
 
$
7,100

 
$
(1,354
)
 
$
(4,179
)
 
$
1,567

Existing technology
13
 
12,600

 
(3,015
)
 
(4,328
)
 
5,257

Customer relationships
11
 
33,500

 
(9,095
)
 
(10,751
)
 
13,654

Other
8
 
285

 
(76
)
 

 
209

Total Intangible Assets
 
 
$
53,485

 
$
(13,540
)
 
$
(19,258
)
 
$
20,687

Schedule of Future Amortization For Finited-Lived Intangible Assets
The total estimated annual future amortization expense for these acquired intangible assets as of December 31, 2015 is as follows (in thousands):
Fiscal Year
 
2016
$
2,600

2017
2,600

2018
2,600

2019
2,592

2020
2,582

Thereafter
5,114

Total
$
18,088