Accounts Receivable (Tables)

9 Months Ended

Jul. 31, 2012

Accounts Receivable [Abstract]

Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]

Accounts receivable at July 31, 2012 and October 31, 2011 consisted of the following:

	July 31, 2012		October 31, 2011
U.S. Government:
Amount billed	$	371	$	52
Unbilled recoverable costs	1,142		1,012
	1,513		1,064
Commercial Customers:
Amount billed	13,381		10,330
Unbilled recoverable costs	5,346		10,556
	18,727		20,886
	$	20,240	$	21,950