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Fair Value Measurements (Tables)
12 Months Ended
Sep. 30, 2013
Fair Value Disclosures [Abstract]  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis
The following table summarizes the financial assets and liabilities measured at fair value on a recurring basis as of September 30, 2013 and 2012, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value:

 
2013
 
Total
 
Level 1
 
Level 2
 
Level 3
Assets, derivative financial instruments
$
193,060

 
$
193,060

 
$
—

 
$
—

 
 
 
 
 
 
 
 
Liabilities, derivative financial instruments
$
394,699

 
$
394,699

 
 
 
 
 
2012
 
Total
 
Level 1
 
Level 2
 
Level 3
Assets, derivative financial instruments
$
134,050

 
$
134,050

 
$
—

 
$
—