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Intangible Assets
6 Months Ended
Sep. 30, 2015
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible Assets
Intangible Assets and Software Development Costs

The following table summarizes our intangible assets and software development costs:
 
September 30, 2015
 
March 31, 2015
 
Gross
 
Net
 
Gross
 
Net
 
carrying
Accumulated
carrying
 
carrying
Accumulated
carrying
(In thousands)
amount
amortization
amount
 
amount
amortization
amount
Amortized intangible assets:
 
 
 
 
 
 
 
Customer relationships
$
10,775

$
(10,775
)
$

 
$
10,775

$
(10,775
)
$

Non-competition agreements
2,700

(2,700
)

 
2,700

(2,700
)

Developed technology
10,660

(10,338
)
322

 
10,660

(10,277
)
383

Trade names
230

(30
)
200

 
230

(7
)
223

Patented technology
80

(80
)

 
80

(80
)

 
24,445

(23,923
)
522

 
24,445

(23,839
)
606

Unamortized intangible assets:
 
 
 
 
 
 
 
Trade names
9,200

 N/A

9,200

 
9,200

 N/A

9,200

Accumulated impairment
(570
)
 N/A

(570
)
 
(570
)
 N/A

(570
)
Finite life reclassification
(230
)
N/A

(230
)
 
(230
)
N/A

(230
)
 
8,400

 N/A

8,400

 
8,400

 N/A

8,400

Total intangible assets
$
32,845

$
(23,923
)
$
8,922

 
$
32,845

$
(23,839
)
$
9,006

 
 
 
 
 
 
 
 
Software development costs
$
6,359

$
(1,894
)
$
4,465

 
$
6,359

$
(1,443
)
$
4,916

Project expenditures not yet in use
35,398


35,398

 
28,293


28,293

Accumulated impairment
(1,391
)
N/A

(1,391
)
 
(1,391
)
N/A

(1,391
)
Total software development costs
$
40,366

$
(1,894
)
$
38,472

 
$
33,261

$
(1,443
)
$
31,818



The following table summarizes our remaining estimated amortization expense relating to in service intangible assets and software development costs.
 
Estimated
 
Amortization
(In thousands)
Expense
Fiscal year ending March 31,
 
2016
$
533

2017
1,067

2018
1,067

2019
844

2020
85

2021

Total
$
3,596


Amortization expense relating to intangible assets was $12,000 and $0.3 million for the three months ended September 30, 2015 and 2014, and $23,500 and $0.6 million for the six months ended September 30, 2015 and 2014. Amortization expense relating to developed technology software intangible assets to be sold, leased, or otherwise marketed was $0.3 million for the three months ended September 30, 2015 and 2014, and $0.6 million for the six months ended September 30, 2015 and 2014. Amortization expense for acquired and internally developed intangibles that are related to products to be sold, leased, or otherwise marketed is included in Products cost of goods sold. Amortization expense for acquired and internally developed intangibles that are related to internal use assets is included in operating expenses as amortization of intangibles.

Capitalized software development costs that are internally developed to be sold, leased, or otherwise marketed, are carried on our balance sheet at net realizable value, net of accumulated amortization. We capitalized approximately $2.6 million and $3.9 million during the three months ended September 30, 2015 and 2014, respectively, and $7.1 million and $7.8 million during the six months ended September 30, 2015 and 2014.