XML 44 R23.htm IDEA: XBRL DOCUMENT v2.4.0.6
Marketable Securities (Tables)
 6 Months Ended
Mar. 31, 2013
Marketable Securities [Abstract]  
Schedule of Marketable Securities
At March 31, 2013 our marketable securities were (in thousands):
 
Amortized
Cost (1)
 
Unrealized
Gains
 
Unrealized
Losses (2)
 
Fair Value (1)
Current marketable securities:
 
 
 
 
 
 
 
Corporate bonds
$
24,036

 
$
1

 
$
(18
)
 
$
24,019

Commercial paper
2,000

 
—

 
—

 
2,000

Certificates of deposit
4,758

 
—

 
(2
)
 
4,756

Government municipal bonds
6,626

 
—

 
—

 
6,626

Current marketable securities
37,420

 
1

 
(20
)
 
37,401

Non-current marketable securities:
 
 
 
 
 
 
 
Corporate bonds
15,906

 
4

 
(37
)
 
15,873

Certificates of deposit
6,251

 
—

 
(19
)
 
6,232

Government municipal bonds
—

 
—

 
—

 
—

Non-current marketable securities
22,157

 
4

 
(56
)
 
22,105

Total marketable securities
$
59,577

 
$
5

 
$
(76
)
 
$
59,506

(1)
Included in amortized cost and fair value is purchased and accrued interest of $500.
(2)
The aggregate related fair value of securities with unrealized losses as of March 31, 2013 was $49,320. These investments have been in an unrealized loss position for less than twelve months.
At September 30, 2012 our marketable securities were (in thousands):
 
Amortized
Cost (1)
 
Unrealized
Gains
 
Unrealized
Losses (2)
 
Fair Value (1)
Current marketable securities:
 
 
 
 
 
 
 
Corporate bonds
$
39,306

 
$
14

 
$
(19
)
 
$
39,301

Commercial paper
2,000

 
—

 
—

 
2,000

Certificates of deposit
7,262

 
—

 
(4
)
 
7,258

Government municipal bonds
9,814

 
1

 
(2
)
 
9,813

Current marketable securities
58,382

 
15

 
(25
)
 
58,372

Non-current marketable securities:
 
 
 
 
 
 
 
Corporate bonds
2,019

 
—

 
(3
)
 
2,016

Total marketable securities
$
60,401

 
$
15

 
$
(28
)
 
$
60,388

(1)
Included in amortized cost and fair value is purchased and accrued interest of $485.
(2)
The aggregate related fair value of securities with unrealized losses as of September 30, 2012 was $34,503. These investments have been in an unrealized loss position for less than twelve months.