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Marketable Securities
 3 Months Ended
Dec. 31, 2014
Marketable Securities [Abstract]  
MARKETABLE SECURITIES
MARKETABLE SECURITIES
Our marketable securities consist of certificates of deposit, corporate bonds and government municipal bonds. We analyze our available-for-sale marketable securities for impairment on an ongoing basis. When we perform this analysis, we consider factors such as the length of time and extent to which the securities have been in an unrealized loss position and the trend of any unrealized losses. We also consider whether an unrealized loss is a temporary loss or an other-than-temporary loss based on factors such as: (a) whether we have the intent to sell the security, (b) whether it is more likely than not that we will be required to sell the security before its anticipated recovery, or (c) permanent impairment due to bankruptcy or insolvency.
In order to estimate the fair value for each security in our investment portfolio, we obtain quoted market prices and trading activity for each security where available. We obtain relevant information from our investment advisor and, if warranted, also may review the financial solvency of certain security issuers. As of December 31, 2014, 33 of our 72 securities that we held were trading below our amortized cost basis. We determined each decline in value to be temporary based upon the above described factors. We expect to realize the fair value of these securities, plus accrued interest, either at the time of maturity or when the security is sold. All of our current holdings are classified as available-for-sale marketable securities and are recorded at fair value on our consolidated balance sheet with the unrealized gains and losses recorded in accumulated other comprehensive loss. All of our current marketable securities will mature in less than one year and our non-current marketable securities will mature in less than three years. During the three months ended December 31, 2014 and 2013, we received proceeds from our available-for-sale marketable securities of $9.3 million and $7.1 million, respectively.
At December 31, 2014 our marketable securities were (in thousands):
 
Amortized
Cost (1)
 
Unrealized
Gains
 
Unrealized
Losses
 
Fair Value (1)
Current marketable securities:
 
 
 
 
 
 
 
Corporate bonds
$
23,409

 
$
—

 
$
(34
)
 
$
23,375

Commercial paper
5,997

 
—

 
(1
)
 
5,996

Certificates of deposit
3,251

 
2

 
—

 
3,253

Current marketable securities
32,657

 
2

 
(35
)
 
32,624

Non-current marketable securities:
 
 
 
 
 
 
 
Corporate bonds
5,122

 
—

 
(18
)
 
5,104

Certificates of deposit
9,506

 
16

 
(26
)
 
9,496

Non-current marketable securities
14,628

 
16

 
(44
)
 
14,600

Total marketable securities
$
47,285

 
$
18

 
$
(79
)
 
$
47,224

(1)
Included in amortized cost and fair value is purchased and accrued interest of $163.

4. MARKETABLE SECURITIES (CONTINUED)
At September 30, 2014 our marketable securities were (in thousands):
 
Amortized
Cost (1)
 
Unrealized
Gains
 
Unrealized
Losses
 
Fair Value (1)
Current marketable securities:
 
 
 
 
 
 
 
Corporate bonds
$
24,668

 
$
1

 
$
(22
)
 
$
24,647

Commercial paper
3,998

 
—

 
(1
)
 
3,997

Certificates of deposit
4,252

 
2

 
—

 
4,254

Current marketable securities
32,918

 
3

 
(23
)
 
32,898

Non-current marketable securities:
 
 
 
 
 
 
 
Corporate bonds
2,051

 
—

 
(4
)
 
2,047

Certificates of deposit
9,502

 
14

 
(22
)
 
9,494

Non-current marketable securities
11,553

 
14

 
(26
)
 
11,541

Total marketable securities
$
44,471

 
$
17

 
$
(49
)
 
$
44,439

(1)
Included in amortized cost and fair value is purchased and accrued interest of $213.
The following tables show the fair values and gross unrealized losses of our available-for-sale marketable securities that have been in a continuous unrealized loss position deemed to be temporary, aggregated by investment category (in thousands):
 
December 31, 2014
 
Less than 12 Months
 
More than 12 Months
 
Fair Value
 
Unrealized Losses
 
Fair Value
 
Unrealized Losses
Corporate bonds
$
28,324

 
$
(52
)
 
$
—

 
$
—

Commercial paper
1,997

 
(1
)
 
—

 
—

Certificates of deposit
2,975

 
(25
)
 
499

 
(1
)
Total
$
33,296

 
$
(78
)
 
$
499

 
$
(1
)
 
September 30, 2014
 
Less than 12 Months
 
More than 12 Months
 
Fair Value
 
Unrealized Losses
 
Fair Value
 
Unrealized Losses
Corporate bonds
$
23,475

 
$
(26
)
 
$
—

 
$
—

Commercial paper
3,998

 
(1
)
 
—

 
—

Certificates of deposit
2,980

 
(20
)
 
748

 
(2
)
Total
$
30,453

 
$
(47
)
 
$
748

 
$
(2
)