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CASH, CASH EQUIVALENTS, AND INVESTMENTS
 3 Months Ended
Jun. 30, 2013
CASH, CASH EQUIVALENTS AND INVESTMENTS [Abstract]  
Cash, Cash Equivalents, and Investments [Text Block]
CASH, CASH EQUIVALENTS, AND INVESTMENTS

The following table represents the Company’s cash, cash equivalents, and investments as of June 30, 2013 and March 31, 2013:

(in thousands)
 
June 30, 2013
 
March 31, 2013
 
 
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
 
$
242,348

 
$
—

 
$
—

 
$
242,348

 
$
118,881

 
$
—

 
$
—

 
$
118,881

Cash equivalents
 
13,995

 
—

 
—

 
13,995

 
109,895

 
—

 
—

 
109,895

Total cash and cash equivalents
 
$
256,343

 
$
—

 
$
—

 
$
256,343

 
$
228,776

 
$
—

 
$
—

 
$
228,776

 
 


 


 


 


 


 


 


 


Short-term investments:
 


 


 


 


 


 


 


 


U.S. Treasury Bills and Government Agency Securities
 
$
37,465

 
$
9

 
$
(57
)
 
$
37,417

 
$
66,092

 
$
18

 
$
(3
)
 
$
66,107

Commercial paper
 
39,743

 
16

 
(1
)
 
39,758

 
15,670

 
9

 
—

 
15,679

Corporate bonds
 
24,419

 
18

 
(2
)
 
24,435

 
34,766

 
31

 
(2
)
 
34,795

Total short-term investments
 
$
101,627

 
$
43

 
$
(60
)
 
$
101,610

 
$
116,528

 
$
58

 
$
(5
)
 
$
116,581

 
 


 


 


 


 


 


 


 


Long-term investments:
 


 


 


 


 


 


 


 


U.S. Treasury Bills and Government Agency Securities
 
$
42,892

 
$
19

 
$
(10
)
 
$
42,901

 
$
55,317

 
$
42

 
$
(1
)
 
$
55,358

Corporate bonds
 
42,089

 
12

 
(102
)
 
41,999

 
23,878

 
23

 
(3
)
 
23,898

Certificates of deposit ("CDs")
 
1,002

 
2

 
—

 
1,004

 
1,002

 
3

 
—

 
1,005

Total long-term investments
 
$
85,983

 
$
33

 
$
(112
)
 
$
85,904

 
$
80,197

 
$
68

 
$
(4
)
 
$
80,261

 
 

 

 

 

 

 

 

 

Total cash, cash equivalents and investments
 
$
443,953

 
$
76

 
$
(172
)
 
$
443,857

 
$
425,501

 
$
126

 
$
(9
)
 
$
425,618



As of June 30, 2013 and March 31, 2013, all of the Company’s investments are classified as available-for-sale securities.  The carrying value of available-for-sale securities included in cash equivalents approximates fair value because of the short maturity of those instruments.

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, 2013 and March 31, 2013:

(in thousands)
 
June 30, 2013
 
March 31, 2013
 
 
Amortized
Cost
 
Fair Value
 
Amortized
Cost
 
Fair Value
Due in 1 year or less
 
$
115,621


$
115,605

 
$
226,423


$
226,476

Due in 1 to 3 years
 
85,984


85,904

 
80,197


80,261

Total
 
$
201,605


$
201,509

 
$
306,620


$
306,737



The Company did not incur any material realized or unrealized net gains or losses in the three months ended June 30, 2013 and 2012.