Fair Value Of Financial Instruments (Tables)

9 Months Ended

May 31, 2012

Fair Value Of Financial Instruments [Abstract]

Financial Assets Measured At Fair Value On A Recurring Basis

     The table below sets forth our fair value hierarchy for financial assets measured at fair value on a recurring basis as of May 31, 2012, (in thousands):

	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Assets:
Cash equivalents	$	10,669	$	—	$	—	$	10,669
Restricted cash (current)		10,351		—		—		10,351
Restricted cash (noncurrent)		7,963		—		—		7,963
Total	$	28,983	$	—	$	—	$	28,983

     The table below sets forth our fair value hierarchy for financial assets measured at fair value on a recurring basis as of August 31, 2011, (in thousands):

	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Assets:
Cash equivalents	$	11,338	$	—	$	—	$	11,338
Restricted cash (current)		12,850		—		—		12,850
Restricted cash (noncurrent)		8,108		—		—		8,108
Total	$	32,296	$	—	$	—	$	32,296