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Goodwill and Other Intangible Assets
3 Months Ended
Mar. 29, 2015
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Other Intangible Assets
GOODWILL AND OTHER INTANGIBLE ASSETS

Goodwill

As of both March 29, 2015 and December 28, 2014, the Company had goodwill with a carrying amount of $21.2 million, $20.8 million of which was allocated to the Residential Segment and $0.4 million of which was allocated to the Power Plant Segment. No goodwill impairment was recorded during the three months ended March 29, 2015 and March 30, 2014.

Other Intangible Assets

The following tables present details of the Company's acquired other intangible assets:
(In thousands)
 
Gross
 
Accumulated
Amortization
 
Net
As of March 29, 2015
 
 
 
 
 
 
Patents and purchased technology
 
$
13,675

 
$
(1,088
)
 
$
12,587

Purchased in-process research and development
 
3,700

 

 
3,700

Other
 
$
500

 
$

 
500

 
 
$
17,875

 
$
(1,088
)
 
$
16,787

 
 
 
 
 
 
 
As of December 28, 2014
 
 
 
 
 
 
Patents and purchased technology
 
$
13,675

 
$
(615
)
 
$
13,060

Purchased in-process research and development
 
$
3,700

 
$

 
$
3,700

 
 
$
17,375

 
$
(615
)
 
$
16,760



Amortization expense for intangible assets totaled $0.5 million for the three months ended March 29, 2015. No amortization expense was incurred during the three months ended March 30, 2014.

As of March 29, 2015, the estimated future amortization expense related to intangible assets with finite useful lives is as follows:
(In thousands)
 
Amount
Fiscal Year
 
 
2015 (remaining nine months)
 
$
1,891

2016
 
2,114

2017
 
1,989

2018
 
1,989

2019
 
1,989

Thereafter
 
3,115

 
 
$
13,087