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Schedule II-Valuation and Qualifying Accounts
 12 Months Ended
Sep. 30, 2013
Valuation and Qualifying Accounts [Abstract]  
Schedule II-Valuation and Qualifying Accounts
Schedule II-Valuation and Qualifying Accounts

 
Balance at
beginning
of period
 
Additions /
Charges
 
Deductions(1)
 
Balance at
end of
period
 
(in thousands)
Year ended September 30, 2011
 
 
 
 
 
 
 
Valuation allowance for doubtful accounts
$
—

 
$
24

 
$
—

 
$
24

Income tax valuation allowance
$
22,724

 
$
6,752

 
$
(19
)
 
$
29,457

 
 
 
 
 
 
 
 
Year ended September 30, 2012
 
 
 
 
 
 
 
Valuation allowance for doubtful accounts
$
24

 
$
59

 
$
(24
)
 
$
59

Income tax valuation allowance
$
29,457

 
$
5,717

 
$
(4
)
 
$
35,170

 
 
 
 
 
 
 
 
Year ended September 30, 2013
 
 
 
 
 
 
 
Valuation allowance for doubtful accounts
$
59

 
$
89

 
$
—

 
$
148

Income tax valuation allowance
$
35,170

 
$
13,979

 
$
72

 
$
49,221

(1)    For the valuation allowance for doubtful accounts, deductions represent write-offs net of recoveries