Prepaid and Other Current Assets (Tables)

12 Months Ended

Jul. 31, 2012

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Prepaid and other current assets

	2012		2011
Refundable facility deposits	$	13	$	16
Prepaid expenses		363		187
Other		11		2
Total	$	387	$	205