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Fair Value Measurements (Tables)
12 Months Ended
Sep. 30, 2012
Fair Value Disclosures [Abstract]  
Financial assets that are measured at fair value on a recurring basis
The tables below present our financial assets that are measured at fair value on a recurring basis as of September 30, 2012 and 2011: 
 
September 30, 2012
 
Fair Value Measurements Using
Financial assets:
Level 1
 
Level 2
 
Level 3
 
(in thousands)
Marketable equity securities
$
4,631

 
$
4,631

 
$

 
$

 
September 30, 2011
 
Fair Value Measurements Using
Financial assets:
Level 1
 
Level 2
 
Level 3
 
(in thousands)
Marketable equity securities
$
5,366

 
$
5,366

 
$

 
$