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CASH, CASH EQUIVALENTS AND INVESTMENTS
 3 Months Ended
Jun. 30, 2011
CASH, CASH EQUIVALENTS AND INVESTMENTS [Abstract]  
Cash, Cash Equivalents and Investments [Text Block]
4. CASH, CASH EQUIVALENTS AND INVESTMENTS


The following table represents the Company’s cash, cash equivalents and investments as of June 30, 2011 and March 31, 2011:


(in thousands)
 
June 30, 2011
 
March 31, 2011
 
 
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
 
$
121,226


 
$
—


 
$
—


 
$
121,226


 
$
136,804


 
$
—


 
$
—


 
$
136,804


Cash equivalents
 
81,521


 
—


 
—


 
81,521


 
147,573


 
1


 
(3
)
 
147,571


Total Cash and cash equivalents
 
$
202,747


 
$
—


 
$
—


 
$
202,747


 
$
284,377


 
$
1


 
$
(3
)
 
$
284,375


 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Short-term investments:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
U.S. Treasury Bills and Government Agency Securities
 
$
61,770


 
$
27


 
$
(4
)
 
$
61,793


 
$
98,845


 
$
17


 
$
(1
)
 
$
98,861


Commercial Paper
 
45,768


 
10


 
—


 
45,778


 
30,071


 
5


 
(1
)
 
30,075


Corporate Bonds
 
16,969


 
6


 
(4
)
 
16,971


 
11,212


 
4


 
—


 
11,216


Certificates of Deposit ("CDs")
 
2,513


 
3


 
—


 
2,516


 
5,420


 
9


 
—


 
5,429


Total Short-term investments
 
$
127,020


 
$
46


 
$
(8
)
 
$
127,058


 
$
145,548


 
$
35


 
$
(2
)
 
$
145,581


 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Long-term investments:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
U.S. Treasury Bills and Government Agency Securities
 
$
13,533


 
$
4


 
$
(2
)
 
$
13,535


 
$
17,387


 
$
4


 
$
—


 
$
17,391


Corporate Bonds
 
38,005


 
56


 
(17
)
 
38,044


 
19,086


 
8


 
(35
)
 
19,059


CDs
 
4,881


 
3


 
(1
)
 
4,883


 
2,879


 
3


 
—


 
2,882


Total Long-term investments
 
$
56,419


 
$
63


 
$
(20
)
 
$
56,462


 
$
39,352


 
$
15


 
$
(35
)
 
$
39,332


 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Total cash, cash equivalents and investments
 
$
386,186


 
$
109


 
$
(28
)
 
$
386,267


 
$
469,277


 
$
51


 
$
(40
)
 
$
469,288






As of June 30, 2011 and March 31, 2011, all of the Company’s investments are classified as available-for-sale securities.  


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 stated maturity as of June 30, 2011 and March 31, 2011:
(in thousands)
 
June 30, 2011
 
March 31, 2011
 
 
Amortized
Cost
 
Fair Value
 
Amortized
Cost
 
Fair Value
Due in 1 year or less
 
$
208,541


 
$
208,579


 
$
293,121


 
$
293,152


Due in 1 to 3 years
 
56,419


 
56,462


 
39,352


 
39,332


Total
 
$
264,960


 
$
265,041


 
$
332,473


 
$
332,484






The Company did not incur any material realized or unrealized net gains or losses in the three months ended June 30, 2011 or 2010.