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Marketable Securities (Tables)
 9 Months Ended
Jun. 30, 2014
Marketable Securities [Abstract]  
Schedule of Marketable Securities
At June 30, 2014 our marketable securities were (in thousands):
 
Amortized
Cost (1)
 
Unrealized
Gains
 
Unrealized
Losses
 
Fair Value (1)
Current marketable securities:
 
 
 
 
 
 
 
Corporate bonds
$
23,253

 
$
2

 
$
(23
)
 
$
23,232

Certificates of deposit
4,002

 
2

 
(1
)
 
4,003

Government municipal bonds
5,094

 
—

 
—

 
5,094

Current marketable securities
32,349

 
4

 
(24
)
 
32,329

Non-current marketable securities:
 
 
 
 
 
 
 
Corporate bonds
5,079

 
—

 
(11
)
 
5,068

Certificates of deposit
7,253

 
21

 
(4
)
 
7,270

Non-current marketable securities
12,332

 
21

 
(15
)
 
12,338

Total marketable securities
$
44,681

 
$
25

 
$
(39
)
 
$
44,667

(1)
Included in amortized cost and fair value is purchased and accrued interest of $327.

At September 30, 2013 our marketable securities were (in thousands):
 
Amortized
Cost (1)
 
Unrealized
Gains
 
Unrealized
Losses
 
Fair Value (1)
Current marketable securities:
 
 
 
 
 
 
 
Corporate bonds
$
35,161

 
$
10

 
$
(30
)
 
$
35,141

Certificates of deposit
1,753

 
—

 
(2
)
 
1,751

Government municipal bonds
10,115

 
—

 
(1
)
 
10,114

Current marketable securities
47,029

 
10

 
(33
)
 
47,006

Non-current marketable securities:
 
 
 
 
 
 
 
Corporate bonds
6,439

 
—

 
(6
)
 
6,433

Certificates of deposit
11,003

 
—

 
(47
)
 
10,956

Non-current marketable securities
17,442

 
—

 
(53
)
 
17,389

Total marketable securities
$
64,471

 
$
10

 
$
(86
)
 
$
64,395

(1)
Included in amortized cost and fair value is purchased and accrued interest of $629.
Schedule of Unrealized Losses on Available-For-Sale Securities
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):
 
June 30, 2014
 
Less than 12 Months
 
More than 12 Months
 
Fair Value
 
Unrealized Losses
 
Fair Value
 
Unrealized Losses
Corporate bonds
$
19,874

 
$
(34
)
 
$
—

 
$
—

Certificates of deposit
498

 
(2
)
 
1,997

 
(3
)
Total
$
20,372

 
$
(36
)
 
$
1,997

 
$
(3
)

6. MARKETABLE SECURITIES (CONTINUED)
 
September 30, 2013
 
Less than 12 Months
 
More than 12 Months
 
Fair Value
 
Unrealized Losses
 
Fair Value
 
Unrealized Losses
Corporate bonds
$
29,911

 
$
(35
)
 
$
2,001

 
$
(1
)
Certificates of deposit
12,451

 
(49
)
 
—

 
—

Government municipal bonds
6,182

 
(1
)
 
—

 
—

Total
$
48,544

 
$
(85
)
 
$
2,001

 
$
(1
)