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Marketable Securities (Tables)
 3 Months Ended
Dec. 31, 2015
Marketable Securities [Abstract]  
Schedule of Marketable Securities
At December 31, 2015 our marketable securities were (in thousands):
 
Amortized
Cost (1)
 
Unrealized
Gains
 
Unrealized
Losses
 
Fair Value (1)
Current marketable securities:
 
 
 
 
 
 
 
Corporate bonds
$
32,844

 
$
1

 
$
(60
)
 
$
32,785

Commercial paper
7,990

 
—

 
(6
)
 
7,984

Certificates of deposit
6,257

 
1

 
—

 
6,258

Government municipal bonds
3,180

 
—

 
(5
)
 
3,175

Current marketable securities
50,271

 
2

 
(71
)
 
50,202

Non-current marketable securities:
 
 
 
 
 
 
 
Corporate bonds
4,051

 
—

 
(29
)
 
4,022

Certificates of deposit
7,526

 
—

 
(24
)
 
7,502

Non-current marketable securities
11,577

 
—

 
(53
)
 
11,524

Total marketable securities
$
61,848

 
$
2

 
$
(124
)
 
$
61,726

(1)
Included in amortized cost and fair value is purchased and accrued interest of $374.
6. MARKETABLE SECURITIES (CONTINUED)
At September 30, 2015 our marketable securities were (in thousands):
 
Amortized
Cost (1)
 
Unrealized
Gains
 
Unrealized
Losses
 
Fair Value (1)
Current marketable securities:
 
 
 
 
 
 
 
Corporate bonds
$
31,753

 
$
—

 
$
(39
)
 
$
31,714

Commercial paper
7,986

 
—

 
(1
)
 
7,985

Certificates of deposit
6,253

 
8

 
—

 
6,261

Government municipal bonds
1,232

 
—

 
(1
)
 
1,231

Current marketable securities
47,224

 
8

 
(41
)
 
47,191

Non-current marketable securities:
 
 
 
 
 
 
 
Corporate bonds
4,138

 
—

 
(12
)
 
4,126

Certificates of deposit
7,511

 
2

 
(6
)
 
7,507

Government municipal bonds
1,996

 
—

 
(3
)
 
1,993

Non-current marketable securities
13,645

 
2

 
(21
)
 
13,626

Total marketable securities
$
60,869

 
$
10

 
$
(62
)
 
$
60,817

(1)
Included in amortized cost and fair value is purchased and accrued interest of $252.
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):
 
December 31, 2015
 
Less than 12 Months
 
More than 12 Months
 
Fair Value
 
Unrealized Losses
 
Fair Value
 
Unrealized Losses
Corporate bonds
$
29,496

 
$
(88
)
 
$
5,000

 
$
(1
)
Commercial paper
5,985

 
(6
)
 
—

 
—

Certificates of deposit
10,728

 
(22
)
 
498

 
(2
)
Government municipal bonds
3,121

 
(5
)
 
—

 
—

Total
$
49,330

 
$
(121
)
 
$
5,498

 
$
(3
)
 
September 30, 2015
 
Less than 12 Months
 
More than 12 Months
 
Fair Value
 
Unrealized Losses
 
Fair Value
 
Unrealized Losses
Corporate bonds
$
33,664

 
$
(52
)
 
$
—

 
$
—

Commercial paper
5,987

 
(1
)
 
—

 
—

Certificates of deposit
4,244

 
(6
)
 
499

 
(1
)
Government municipal bonds
3,159

 
(3
)
 
—

 
—

Total
$
47,054

 
$
(62
)
 
$
499

 
$
(1
)