Geographic and Segment Information (Notes)

12 Months Ended

Mar. 31, 2014

Segment Reporting [Abstract]

Segment Reporting Disclosure [Text Block]

GEOGRAPHIC AND SEGMENT INFORMATION

The Company's reporting segments include semiconductor products and technology licensing.  The Company does not allocate operating expenses, interest income, interest expense, other income or expense, or provision for or benefit from income taxes to these segments for internal reporting purposes, as the Company does not believe that allocating these expenses is beneficial in evaluating segment performance.  Additionally, the Company does not allocate assets to segments for internal reporting purposes as it does not manage its segments by such metrics.

The following table represents revenues and gross profit for each segment (amounts in thousands):

	Years ended March 31,
	2014				2013				2012
	Net Sales		Gross Profit		Net Sales		Gross Profit		Net Sales		Gross Profit
Semiconductor products	$	1,836,639	$	1,034,165	$	1,497,820	$	754,656	$	1,296,175	$	712,798
Technology licensing	94,578		94,578		83,803		83,803		87,001		86,496
	$	1,931,217	$	1,128,743	$	1,581,623	$	838,459	$	1,383,176	$	799,294

The Company sells its products to distributors and original equipment manufacturers (OEMs) in a broad range of market segments, performs on-going credit evaluations of its customers and, as deemed necessary, may require collateral, primarily letters of credit.  The Company's operations outside the U.S. consist of product assembly and final test facilities in Thailand, and sales and support centers and design centers in certain foreign countries.  Domestic operations are responsible for the design, development and wafer fabrication of products, as well as the coordination of production planning and shipping to meet worldwide customer commitments.  The Company's Thailand assembly and test facility is reimbursed in relation to value added with respect to assembly and test operations and other functions performed, and certain foreign sales offices receive compensation for sales within their territory.  Accordingly, for financial statement purposes, it is not meaningful to segregate sales or operating profits for the assembly and test and foreign sales office operations.  Identifiable long-lived assets (consisting of property, plant and equipment net of accumulated amortization) by geographic area are as follows (amounts in thousands):

	March 31,
	2014		2013
United States	$	311,926	$	325,326
Thailand	179,139		171,100
Various other countries	40,902		18,118
Total long-lived assets	$	531,967	$	514,544

Sales to unaffiliated customers located outside the U.S., primarily in Asia and Europe, aggregated approximately 84%, 83% and 82% of consolidated net sales for fiscal 2014, 2013 and 2012, respectively.  Sales to customers in Europe represented 21%, 22% and 23% of consolidated net sales for fiscal 2014, 2013 and 2012, respectively.  Sales to customers in Asia represented 60%, 58% and 56% of consolidated net sales for fiscal 2014, 2013 and 2012, respectively.  Within Asia, sales into China, including Hong Kong, represented 29%, 27% and 24% of consolidated net sales for fiscal 2014, 2013 and 2012, respectively.  Sales into Taiwan represented 13% of consolidated net sales in each of fiscal 2014 and 2013. Sales into Taiwan represented 15% of consolidated net sales for fiscal 2012.  Sales into any other individual foreign country did not exceed 10% of the Company's net sales for any of the years presented.

No single end customer accounted for 10% or more of the Company's net sales during fiscal 2014, 2013 or 2012. Future Electronics, one of the Company's distributors, accounted for approximately 10% of the Company's net sales in fiscal 2012. These net sales are reported in the semiconductor products segment. No other distributor accounted for 10% or more of the Company's net sales in fiscal 2014 or fiscal 2013.