Related Parties (Tables) (Symbio [Member])

12 Months Ended

Jul. 31, 2012

Symbio [Member]

Related Party Transaction [Line Items]

Receivable from Symbio

	2012		2011
Payable to Spark
Balance at beginning of period	$	—	$	—
Operating costs billed to eOn		—		13
Payments to Spark		—		(13	)
Balance at end of period	$	—	$	—

Payable to Spark

	2012		2011
Receivable from Symbio
Balance at beginning of period	$	—	$	8
Billings and accruals for operating expenses		—		—
Payments received from Symbio		—		(8	)
Balance at end of period	$	—	$	—