Accounts Receivable (Tables)

12 Months Ended

Oct. 31, 2012

Accounts Receivable [Abstract]

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

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

	2012		2011
U.S. Government:
Amount billed	$	20	$	52
Unbilled recoverable costs	890		1,012
	910		1,064
Commercial customers:
Amount billed	$	18,786	$	10,330
Unbilled recoverable costs	6,288		10,556
	25,074		20,886
	$	25,984	$	21,950