CASH, CASH EQUIVALENTS AND INVESTMENTS

12 Months Ended

Mar. 31, 2011

The following table presents the Company's cash, cash equivalents and investments as of March 31, 2011 and 2010:



(in thousands)	March 31, 2011										March 31, 2010
	Amortized Cost		Gross Unrealized Gains			Gross Unrealized Losses			Fair Value		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Cash and cash equivalents:
Cash	$	136,804	$	—		$	—		$	136,804	$	69,918	$	—	$	—	$	69,918
Cash equivalents	147,573		1			(3		)	147,571		280,043		—		—		280,043
Total Cash and cash equivalents	$	284,377	$	1		$	(3	)	$	284,375	$	349,961	$	—	$	—	$	349,961
Short-term investments:
U.S. Treasury Bills and Government Agency Securities	$	98,845	$	17		$	(1	)	$	98,861	$	—	$	—	$	—	$	—
Commercial Paper, U.S. Corporate Bonds and Certificates of Deposit ("CDs")	46,703		18			(1		)	46,720		—		—		—		—
Auction Rate Securities	—		—			—			—		19,231		—		—		19,231
Total Short-term investments	$	145,548	$	35	—	$	(2	)	$	145,581	$	19,231	$	—	$	—	$	19,231

Long-term investments:
U.S. Treasury Bills and Government Agency Securities	$	17,387	$	4		$	—		$	17,391	$	—	$	—	$	—	$	—
U.S. Corporate Bonds and CDs	21,965		11			(35		)	21,941		—		—		—		—
Total Long-term investments	$	39,352	$	15		$	(35	)	$	39,332	$	—	$	—	$	—	$	—

Total cash, cash equivalents and investments	$	469,277	$	51		$	(40	)	$	469,288	$	369,192	$	—	$	—	$	369,192

As of March 31, 2011, the Company's investments are classified as available-for-sale securities. As of March 31, 2010, the Company's short-term investments consisted of auction rate securities (“ARS”), classified as trading securities and the Company had no long-term investments.

The Company reviews its investments for impairment quarterly. Based on its review, the Company did not identify any investments that were other-than-temporarily impaired during the years ended March 31, 2011 and 2010.

The following table summarizes the amortized cost and fair value of the Company's cash equivalents, short-term investments and long-term investments, classified by effective maturity as of March 31, 2011 and 2010:



(in thousands)	March 31, 2011				March 31, 2010
	Amortized Cost		Fair Value		Amortized Cost		Fair Value

Due in 1 year or less	$	293,121	$	293,152	$	299,274	$	299,274
Due in 1 to 5 years	39,352		39,332		—		—
Total	$	332,473	$	332,484	$	299,274	$	299,274

- Definition

This item represents the entire disclosure related to Investments in Certain Debt and Equity Securities (and certain other trading assets) which include all debt and equity securities (other than those equity securities accounted for under the equity or cost methods of accounting) with readily determinable fair values. Other trading assets include assets that are carried on the balance sheet at fair value and held for trading purposes. A debt security represents a creditor relationship with an enterprise that is in the form of a security. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities (and other trading assets).

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