Intangible Assets

12 Months Ended

Mar. 31, 2013

7. Intangible Assets

Intangible assets at March 31, 2013 and 2012 consisted of the following (in thousands):


		2013						2012
		Gross		Accumulated		Net Book		Gross		Accumulated		Net Book	Estimated
		Amount		Amortization		Value		Amount		Amortization		Value	Useful Life
Licenses	$	5,349	$	(3,366)	$	1,983	$	5,360	$	(2,689)	$	2,671	7
Trade names and trademarks		1,165		(1,040)		125		1,212		(909)		303	7
Core technology and know-how		5,453		(4,812)		641		5,611		(4,813)		798	5-10
Intangible assets	$	11,967	$	(9,218)	$	2,749	$	12,183	$	(8,411)	$	3,772

The Company recorded intangible amortization expense of $0.9 million, $2.6 million, and $2.9 million for the years ended March 31, 2013, 2012, and 2011, respectively. During the fourth quarter of the year ended March 31, 2012, the Company elected to change its accounting policy for legal costs to defend and maintain its patents. Historically, the Company capitalized these costs and amortized them over the useful lives of the patents. At that time, the Company determined a change to expense these costs as incurred is preferable, and elected to make that change by expensing the remaining unamortized patent costs of $4.9 million.

Expected future amortization expense related to intangible assets is as follows (in thousands):


For the years ended March 31,		Total
2014	$	754
2015		573
2016		568
2017		553
2018		301
Thereafter		-
Total	$	2,749

The geographic composition of intangible assets is as follows (in thousands):


		March 31,
		2013		2012
Intangible assets by geography:
U.S.	$	2,624	$	3,469
Europe		125		303
Total	$	2,749	$	3,772

The business segment composition of intangible assets is as follows (in thousands):


		March 31,
		2013		2012
Intangible assets by business segments:
Wind	$	152	$	1,119
Grid		2,597		2,653
Total	$	2,749	$	3,772

- Definition

The entire disclosure for all or part of the information related to intangible assets.

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