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Marketable Securities
 9 Months Ended
Jun. 30, 2014
Investments, Debt and Equity Securities [Abstract]  
Marketable Securities
Marketable Securities
The Company invests its cash in marketable securities and classifies them as available-for-sale. The Company records these securities at fair value. Marketable securities reported as current assets represent investments that mature within one year from the balance sheet date. Long-term marketable securities represent investments with maturity dates greater than one year from the balance sheet date. At the time that the maturity dates of these investments become one year or less, the securities are reclassified to current assets. Unrealized gains and losses are excluded from earnings and reported in a separate component of stockholders’ equity until they are sold or mature. At the time of sale, any gains or losses, calculated by the specific identification method, will be recognized as a component of operating results.
The following is a summary of marketable securities (included in short and long-term marketable securities in the Consolidated Balance Sheets), including accrued interest receivable, as of June 30, 2014 and September 30, 2013 (in thousands): 
 
Amortized
Cost
 
Gross
Unrealized
Gains
 
Gross
Unrealized
Losses
 
Fair Value
June 30, 2014:
 
 
 
 
 
 
 
U.S. Treasury securities and obligations of U.S. government agencies
$
14,860

 
$
3

 
$
(16
)
 
$
14,847

Corporate securities
80,901

 
47

 
(78
)
 
80,870

Mortgage-backed securities
1,002

 
29

 
—

 
1,031

Other debt securities
949

 
—

 
—

 
949

Municipal securities
15,201

 
2

 
(9
)
 
15,194

Bank certificate of deposits
15,317

 
2

 
(3
)
 
15,316

 
$
128,230

 
$
83

 
$
(106
)
 
$
128,207

September 30, 2013:
 
 
 
 
 
 
 
U.S. Treasury securities and obligations of U.S. government agencies
$
19,528

 
$
6

 
$
(13
)
 
$
19,521

Corporate securities
35,045

 
11

 
(47
)
 
35,009

Mortgage-backed securities
1,093

 
25

 
(1
)
 
1,117

Other debt securities
88

 
—

 
—

 
88

Municipal securities
25,199

 
15

 
(7
)
 
25,207

Bank certificate of deposits
9,451

 
—

 
(2
)
 
9,449

 
$
90,404

 
$
57

 
$
(70
)
 
$
90,391


The fair value of the marketable securities at June 30, 2014 by contractual maturity, are shown below (in thousands). Expected maturities could differ from contractual maturities because the issuers of the securities may have the right to prepay obligations without prepayment penalties.
 
Fair Value
Due in one year or less
$
57,071

Due after one year through five years
67,727

Due after ten years
3,409

 
$
128,207