Intangible Assets and Goodwill (Notes)

6 Months Ended

Sep. 30, 2012

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible assets consist of the following (amounts in thousands):



	September 30, 2012
	Gross Amount		Accumulated Amortization			Net Amount
Developed technology	$	353,309	$	(46,199	)	$	307,110
Customer-related	194,500		(22,722		)	171,778
Trademarks and trade names	15,730		(1,585		)	14,145
Backlog	24,610		(6,254		)	18,356
In-process technology	95,286		—			95,286
Distribution rights	5,236		(4,917		)	319
Covenants not to compete	400		(267		)	133
	$	689,071	$	(81,944	)	$	607,127



	March 31, 2012
	Gross Amount		Accumulated Amortization			Net Amount
Developed technology	$	94,681	$	(35,920	)	$	58,761
Customer-related	20,400		(4,633		)	15,767
Trademarks and trade names	1,730		(684		)	1,046
Backlog	2,410		(2,410		)	—
In-process technology	14,086		—			14,086
Distribution rights	5,236		(4,660		)	576
Covenants not to compete	400		(200		)	200
	$	138,943	$	(48,507	)	$	90,436

The Company amortizes intangible assets over their expected useful lives, which range between 1 and 15 years. In the six months ended September 30, 2012, the Company acquired $258.6 million of developed technology which have a weighted average amortization period of approximately 11 years, $174.1 million of customer-related intangible assets which have a weighted average amortization period of approximately 5 years, $14.0 million of trademarks and trade names which have a weighted average amortization period of approximately 5 years, $22.2 million of intangible assets related to acquisition date backlog which have a weighted average amortization period of approximately one year and $81.2 million of in-process technology which will begin amortization once the technology reaches technological feasibility. The following is an expected amortization schedule for the intangible assets for the remainder of fiscal year 2013 through fiscal year 2017, absent any future acquisitions or impairment charges (amounts in thousands):



Year ending March 31,	Projected Amortization Expense
2013	$82,147
2014	102,763
2015	137,477
2016	88,724
2017	56,958

Amortization expense attributed to intangible assets was $28.9 million and $33.4 million for the three and six months ended September 30, 2012, respectively. Amortization expense attributed to intangible assets was $3.2 million and $6.5 million for the three and six months ended September 30, 2011, respectively. These amortization expenses include amortization of intangible assets purchased from third parties as well as amortization expense from acquisition related intangible assets as separately disclosed in the condensed consolidated statements of income. The Company found no indication of impairment of its intangible assets in either of the three and six-month periods ended September 30, 2012 and 2011.

Goodwill activity for the six months ended September 30, 2012 was as follows (amounts in thousands):



	Semiconductor Products Reporting Unit		Technology Licensing Reporting Unit
Balance at March 31, 2012	$	74,313	$	19,200
Additions due to the acquisition of SMSC	157,840		—
Additions due to the acquisition of Roving Networks	8,652		—
Additions due to contingent consideration payments to previous owners of R&E International	54		—
Balance at September 30, 2012	$	240,859	$	19,200

In the six months ended September 30, 2012, the Company acquired SMSC. This acquisition resulted in approximately $157.8 million of goodwill which was allocated to the semiconductor products reporting unit.

In the six months ended September 30, 2012, the Company acquired Roving Networks. This acquisition resulted in approximately $8.7 million of goodwill which was allocated to the semiconductor products reporting unit.

At September 30, 2012, $240.9 million of goodwill was recorded in the Company's semiconductor products reporting unit and $19.2 million was recorded in the Company's technology licensing reporting unit. At March 31, 2012, the Company applied a qualitative goodwill impairment screen to its two reporting units, concluding it was not more likely than not that goodwill was impaired. Through September 30, 2012, the Company has never recorded an impairment charge against its goodwill balance.

- Definition

The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss.

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